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precipitate
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音标：英 [prɪ'sɪpɪteɪt] 美 [prɪ'sɪpɪtet]
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解释：
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n. [化学] 沉淀物
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vt. 使沉淀；促成；猛抛；使陷入
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vi. [化学] 沉淀；猛地落下；冷凝成为雨或雪等
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adj. 突如其来的；猛地落下的；急促的
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助记提示：
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1. pre- "before, forth" + cipit- + -ate.
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2. 本义为：头向前、朝前倾斜。很显然这会造成不稳定，进而导致摔倒、摔下、坠落，由此引申为：猛然摔下，坠落，又由此引申为沉淀。以及由头向前而表示的那种不沉稳之意，进而引申为：轻率、鲁莽、急促。
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中文词源：
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precipitate 一头栽下，沉淀，凝结，降水，降雪pre-,在前，-cip,头，词源同cap,captain,-ate,使。即使头在前，一头栽下，后用于气象术语，降水，降雪，引申物理术语沉淀，沉积，积灰，如Electrostatic Precipitator,电除尘器。
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precipitate 鲁莽的，仓促的pre-,在前，-cip,头，词源同cap,captain,-ate,形容词后缀。即使头在前的，一头栽下的，引申 词义鲁莽的，仓促的。
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英文词源：
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precipitate (v.)
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"to hurl or fling down," 1520s, a back formation from precipitation or else from Latin praecipitatus, past participle of praecipitare "to throw or dive headlong," from praeceps "steep, headlong, headfirst" (see precipice). Meaning "to cause to happen, hurry the beginning of" is recorded from 1620s. Chemical sense is from 1620s; meteorological sense first attested 1863. Related: Precipitated; precipitating.
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precipitate (adj.)
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c. 1600, from Latin praecipitatus, past participle of praecipitare "to throw or dive headlong" (see precipitate (v.)). Meaning "hasty" is attested from 1650s. Related: Precipitately.
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precipitate (n.)
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1560s, probably a back formation from precipitation.
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双语例句：
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1. Adding sulphate to the solution will give a precipitate.
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将硫酸盐加入该溶液会产生沉淀.
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来自《简明英汉词典》
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2. A cool breeze caused a precipitate drop in the temperature.
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冷风使温度急降.
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来自《简明英汉词典》
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3. Clouds usually precipitate as rain or snow.
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云常会凝结成雨或雪.
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来自《简明英汉词典》
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4. The king was too precipitate in declaring war.
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国王在宣战一事上过于轻率.
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来自《简明英汉词典》
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5. It would only serve to precipitate his ruin.
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它只会加速他的毁灭.
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来自《现代汉英综合大词典》
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更多相关例句：
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His resignation precipitated a leadership crisis.
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他的辞职立即引发了领导层的危机。【牛津词典】
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The assassination of the president precipitated the country into war.
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总统被暗杀使国家骤然陷入战争状态。【牛津词典】
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to act precipitately
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贸然行事【牛津词典】
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The killings in Vilnius have precipitated the worst crisis yet...
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维尔纽斯的几起谋杀事件导致了迄今为止最严重的危机。【柯林斯高阶英语词典】
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A slight mistake could precipitate a disaster.
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小错误可能会招致大灾难。【柯林斯高阶英语词典】
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I don't think we should make precipitate decisions...
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我认为我们不应该贸然作出决定。【柯林斯高阶英语词典】
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Many of our current problems have been caused by precipitate policy making in the past.
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我们目前的很多问题都是由过去仓猝制定的政策导致的。【柯林斯高阶英语词典】
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He thought Miss Archer sometimes of too precipitate a readiness.
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他觉得,阿切尔小姐有时太性急,太直接了当.【辞典例句】
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The color is steady and is precipitate with the content of finance building.
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建筑色彩稳重、沉淀与金融建筑的内涵相协调.【期刊摘选】
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Iron and aluminum compounds precipitate as a voluminous sludge.
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铁和铝的化合物成为一种体积庞大的蓬松的游渣沉淀下来.【辞典例句】
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We don't want to do anything that would precipitate a downgrade.
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我们不想做任何会导致评级下调的事情.【期刊摘选】
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At these levels carbon does not precipitate like oxygen, nor is it electrically active.
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这些浓度下碳既不象氧一样沉淀, 也不呈电活性.【期刊摘选】
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Forsteritic olivine almost invariably represents primary precipitate material.
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镁质橄榄石几乎总是代表了原生沉淀物.【辞典例句】
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Adding sulphate to the solution will give a precipitate.
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将硫酸盐加入该溶液会产生沉淀.【《简明英汉词典》】
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All gravimetric measurements require some sort of crucible or dish to hold the residue or precipitate.
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所有重量分析需要某种坩埚或器皿保留残渣或沉淀物.【辞典例句】
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On the approach of the enemy, either reckless battle or precipitate flight would be proposed.
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敌人来了,主张拚一下, 否则就要逃跑.【期刊摘选】
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Through one - year production test, intensified liquor processor proved its excellent performance in precipitate removal.
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通过一年的生产试验证明:加强型酒处理机对白酒的除浊效果较好.【期刊摘选】
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Once, in trying to stem a precipitate retreat, he was wounded and his leg broken.
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有一次, 为了阻止队伍溃退, 他受了伤,腿骨折了.【期刊摘选】
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Lactic acid fungus beverage can keep even stable state often, easy to layer and precipitate.
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乳酸菌饮料常常不能保持均匀的稳定状态, 易分层和沉淀.【期刊摘选】
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The drugs may precipitate a first attack in unrecognized cases of this rare condition.
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当这种少见的疾病未被查出时,应用此药促使其第一次发作.【辞典例句】
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Clouds usually precipitate as rain or snow.
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云常会凝结成雨或雪.【《简明英汉词典》】
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This precipitate dissolves in an excess of aqueous ammonia.
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这个沉淀能溶解在过量的氨水中.【辞典例句】
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It would only serve to precipitate his ruin.
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它只会加速他的毁灭.【《现代汉英综合大词典》】
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She was frightened by the precipitate shock and could not speak a word for few minutes.
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她被这突如其来的打击吓得好几分钟讲不出一句话来.【期刊摘选】
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A cool breeze caused a precipitate drop in the temperature.
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冷风使温度急降.【《简明英汉词典》】
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Addition of 4 equivalents of 3 N HCl a thick precipitate that was collected by filtration.
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3晚的当量的盐酸了厚厚的沉淀是由过滤收集.【期刊摘选】
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All this will precipitate an economic crisis.
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所有这些会促成经济危机.【期刊摘选】
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Differences between expectations and reality often precipitate tension and, ultimately, claims.
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预期和现实之间的差距经常造成关系紧张并最终形成诉讼请求.【期刊摘选】
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