名词
中文翻译:Unknown
同义词:
['chemist', 'chemical', 'reagent', 'substance', 'element']
例句:
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1.化学元素
如氯、铬等
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1. The chemist analyzed the sample for trace elements.
化学家对样本进行了微量元素分析。
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2. The chemical reacted violently with water.
这种化学物质与水剧烈反应。
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3.The reagent was used to test for the presence of a particular compound.
该试剂被用来测试特定化合物的存在。
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4.The substance is highly toxic and should be handled with care.
该物质具有高度毒性,应小心处理。
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5. The element is essential for life on Earth.
该元素是地球上生命所必需的。