She has bitten her nails down to the quick.

她咬指甲都咬到了活肉。

Criticism touched him to the quick.

这批评触到了他的痛处。

Change the class to the quick fix class that you just created.

将类更改为您刚刚所创建的快速修复类。

It took her several months to adapt to the quick pace of city life.

她花了几个月时间才城里的快节奏生活。

What you said about his failure in love courtship cut him to the quick.

你说的关于他示爱失败的话，触到他的痛处了。