英语词汇pin down是什么意思，pin down的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	pin down
释义	WORD PARTNERSHIP 词语搭配〔pin〕was finally able to pin down the cause of the disease.最后终于确定病因美国传统
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