Even innocuous substances can sometimes register a positive result in a drug test.
即使无害
物质在药物测试
有
也会呈阳性。
Even innocuous substances can sometimes register a positive result in a drug test.
即使无害物质在药物测试有也会呈阳性。
Do you call these innocent amusements?
你把这些叫做无害娱乐吗?
This device should be installed at the furthermost downstream end of the supply pipe or fixture where temporary spillage due to critical flow pressure conditions can be discharged harmlessly.
这种装置应该安装在供应管道或卫生洁具下游尽
能远，并且由于临界水压环境能产生无害排放暂性喷溅地方。
The purple pigment which is asbtracted from the Althaea roseal is a harmless natural dystuff.This article introduces the research of the purple pigmenting from the althaea roseal and its stability.
从蜀葵花瓣
紫色素是一种安全无害天然染料.本文对蜀葵花紫色素及稳定性研究作了介绍.
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