点击下方单词,选择对的这个单词
1. 缄口不语：dumfound 说不出话 | dummy up 缄口不语 | dummy 哑巴
verb
1. refuse to talk or stop talkingfall silent
e.g. The children shut up when their father approached
Synonym: close upclam upshut upbelt upbutton upbe quietkeep mum
2. make a dummy of
e.g. dummy up the books that are to be published
Synonym: dummy
多通过句子记忆单词，而不是单独死记硬背。
