Hayley教口語，“不吭聲”用英語怎么說？

/klæm/

to become silent suddenly, usually because you are embarrassed or nervous, or do not want to talk about a particular subject

(通常指因為尷尬、緊張或不愿談論某一話題而突然)沉默不語，閉口不言，拒不開口

He just clams up if you ask him about his childhood.

要是你問起他的童年，他就干脆不吭聲了。

He's hiding something. He clams up every time we try to ask him about Mary.

他在竭力隱瞞什么東西。每次問他瑪麗的事他都支支吾吾。