俚语：be as quiet as a mouse

英文释义：to be very quiet She was as quiet as a mouse.

“非常安静；静止如鼠；和老鼠一样安静；一声不响”，指没什么声音，主要用于形容人的寡言少语。

例句：
Good thing is that those girls were not wondering why Mike appeared always as poor as a church mouse.
好在这些女孩们没奇怪迈克怎么总是看起来一贫如洗的样子。