The child sat as quiet as a mouse, hardly touching her food, except the little roll.

孩子像老鼠一样安静地坐着， 几乎不碰她的食物， 除了那个小面包卷。

Smokey may enjoy a calm atmosphere but she's certainly not as quiet as a mouse... or indeed any pet that doesn't says boo.

Smokey或许喜欢安静的环境，但她自己可不像老鼠或任何安静的动物那样不出声。

The expression " to be as quiet as a mouse" means to be extremely quiet, not to make any noise.

“to be quiet as a mouse” 的意思是非常安静， 不发出任何声音。