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by itself什么意思、怎么读?单词发音音标、相关例句、释义:自动地单独地

by itself 音标:[baɪ ɪt'self]
自动地;单独地

A substance or factor that will not promote cancer by itself but can potentiate cancer when acting with carcinogenic agents.

共同致癌物自身不致癌但当与致癌剂作用则能加重癌症的物质或因素

The machine works by itself.

机器自行运转。

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