Many are suspicious of meat quality and even materials used in food packaging.
许多人怀疑肉类、甚至用于食品包装的材料有问题。
Industrial waste is even more harmful since there are many highly poisonous materials in it, such as copper and lead.
工业废料更有害,因为其中有许多毒性很强的材料,如铜和铅。
The residue found in third-hand smoke includes heavy metals, carcinogens and, even radioactive materials that are dangerous to children.
三手烟残余中包含有重金属、和致癌物质,特别是放射性物质对儿童是危害重大的。
Some of these books which we think are roughly from a certain date, they will contain narrative snippets or legal materials or oral traditions that may even date back or stretch back further in time, and they were perhaps transmitted orally and then ended up in these written forms.
有些篇章只是被我们粗略地认为出现于那个年代,其中包含的故事片段或律法材料或口头传统,其实也许能够追溯到更久远,所以这些很可能一开始是被口头传播,后来才用文字形式记载的。
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