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gnomon
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音标：英 ['nəʊmɒn] 美 ['nomɑn]
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解释：
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n. 指时针；日晷
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英文词源：
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gnomon (n.)
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"vertical shaft that tells time by the shadow it casts" (especially the triangular plate on a sundial), 1540s, from Latin gnomon, from Greek gnomon "indicator (of a sundial), carpenter's rule," also, in plural, "the teeth that mark the age of a horse or mule," literally "one that discerns or examines," from gignoskein "to come to know" (see gnostic (adj.)). In geometry from 1560s, from a use in Greek. In early use in English sometimes folk-etymologized as knowman. Related: Gnomonic.
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双语例句：
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1. In all cases the gnomon lies in the plane of the meridian.
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表始终都处于子午面内.
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来自辞典例句
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2. The gnomon - and - ruler indicates the time by the length of the shadow of stylus in the sun.
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圭表是利用太阳射影的长短来判断时间的.
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来自中国文学部分
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更多相关例句：
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In all cases the gnomon lies in the plane of the meridian.
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表始终都处于子午面内.【辞典例句】
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