| 单词 | trace |
| 释义 | trace1 /treis; tres/ n 1 [U, C] mark, sign, etc showing that sb or sth has been present, that sth has existed or happened: 踪迹; 痕迹; 形迹： ~s of an ancient civilization. 古代板明的潮氐 The police were unable to find any ~ of the thief. 警察找不出那窃贼的任何踪迹。 We've lost all ~ of them, don't know where they are. 我们不知道他们现在何处。 2 [C] very small amount: 微量; 少许： The postmortem showed of arsenic in the intestines. 验尸显示肠内留有微量的砒霜。 '~ element, element of which a ~ is necessary for the development of animal or plant life and without which growth is poor (eg manganese in the soil, for wheat and oats). 微量元素(此种元素之少量为动植物生长所必须, 如栽种小麦及燕麦时土坏中之录)。 |
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