“only when necessary”的中英文读音、翻译、固定搭配用法、短语词组及例句-英语词汇-学习网

单词

only when necessary

释义

主要翻译
英语		中文
only when necessary advadverb: Describes a verb, adjective, adverb, or clause--for example, "come quickly," "very* rare," "happening now," "fall down."*	(strictly as required)	只在必要时 zhī zài bì yào shí
	You must take the pain killers only when necessary.

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