clammed up
美英
        - v.〈非正式〉一声不吭;沉默不语;三缄其口
 
第三人称单数:clams up 现在分词:clamming up 过去式:clammed up
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      第三人称单数:clams up 现在分词:clamming up 过去式:clammed up
clammed up