英语翻译1 Before disposing of unwanted,opened,uncontaminated chemicals check with others in your department or laboratory who may be able to use them.2 Use only the amount of material that is needed for conclusive results.3 Order only the amount

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英语翻译1 Before disposing of unwanted,opened,uncontaminated chemicals check with others in your department or laboratory who may be able to use them.2 Use only the amount of material that is needed for conclusive results.3 Order only the amount
英语翻译
1 Before disposing of unwanted,opened,uncontaminated chemicals check with others in your department or laboratory who may be able to use them.
2 Use only the amount of material that is needed for conclusive results.
3 Order only the amount of material needed for the project or experiment.

英语翻译1 Before disposing of unwanted,opened,uncontaminated chemicals check with others in your department or laboratory who may be able to use them.2 Use only the amount of material that is needed for conclusive results.3 Order only the amount
1.在丢弃你不要了的、已经打开的但未经污染的化学物质之前,先问问系里或实验室里的其他人需不需要这些东西.
2.只取用为了得到结果所需要量的材料.
3.只订购计划或者实验所需要量的材料.

英语翻译作用before 英语翻译1every morning before she left for school 英语翻译Mickey was a nice,cheerful and optimistic(乐观的)boy.No one could remember ever having seen him angry ;he didn't mind whatever people said to him.He seemed unable to say bad words to anyone else.Even his teachers liked his good disposi 英语翻译ending before i begin 英语翻译其中the season before 英语翻译make love before marriage 英语翻译We have a long ride before us.before 英语翻译1back and neck before you do any difficult activities like running 英语翻译i'll _____________ before i _____________ 英语翻译要用.after..before..but. 英语翻译用在it is .before.造句英语翻译Our village __________________________what it was before. 英语翻译ever before.翻译成中文哦~ 英语翻译Have you heard it before? 英语翻译.(play a part,than ever before 英语翻译翻译成英语Tom often before。英语翻译the price are the same before? 英语翻译even before my father came along.