有害物质

hazardous substances的用法和样例：

例句

They were trying to remove harmful substances from the soil.他们正设法去除土壤里的有害物质。
Those who illegally dump hazardous substances should be held accountable.非法倾倒有害物质者应该承担责任。

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That arn computer well is important.

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2007年VOA标准英语（八月）

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11.Acids are chemical compounds that,in water solution,have a sharp taste， a corrosive action on metals,and the ability to turn certain blue vegetable dyes red. 12.Billie Holiday's reputation as a great jazz-blues singer rests on her ability to giv

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