例句
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Scientists tried out thousands of chemicals before they found the right one.
科学家们试验了数千种的化学药品才找到一种合适的。
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A police put some chemicals on the piece of paper and a line of words showed up.
一位警察在一张条上涂上化学药品, 一行字迹清晰地显现出来。
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Chemicals are used to keep the insects down.
化学药品用于阻止昆虫滋生。
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This chemical acts a part of an acid in our experiment.
这种化学药品在我们的试验中起酸的作用。
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In the short term, chemical sprays are clearly an effective way to control pests.
从短期来看，喷洒化学药品显然能有效控制虫害。
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The fission of the cell could be inhibited with certain chemicals.
细胞的裂变可以通过某些化学药品加以抑制.
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B : Oh , well, you'd need your enlarger, and chemicals, and so on.
嗯, 最好你有一台放大机, 和化学药品, 如此之类的.
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DEET and other chemicals that against insects can keep mosquitoes from biting.
避蚊胺和其他能驱赶昆虫的化学药品也能阻止蚊子的叮咬.
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In the short term, chemical sprays are clearly an effective way to control pests...
从短期来看，喷洒化学药品显然能有效控制虫害。