He also started biting his nails.

他也开始咬指甲。

In this case, Stu is biting his nails, which some people believe is a bad habit.

在这种情况下， 斯图咬指甲，有些人认为这是一个坏习惯。

He's showing the group his fingernails and indicating that yes, he does in fact bite his nails.

他向大家展示他的指甲， 并表示是的，他确实在咬指甲。

Mr. Carrisford sat and bit his nails as he looked into the glowing bed of coals in the grate.

卡里斯福德先生坐在那里，咬着指甲看着壁炉里发光的煤床。

The men-at-arms drink by a good fire, while the burgher bites his nails to buy them wine and wood.

士兵们在篝火旁喝酒，而市民则咬着指甲给他们买酒和木头。

The restlessness that had caused him to sob and bite his nails only a few months before seemed to have gone.

几个月前让他哭泣和咬指甲的不安似乎已经消失了。

" The man was fidgeting. Ah, he's fidgeting. He's so stressed, he can't sort of stay still. And biting his nails." Okay?

“那个男人在坐立不安。啊，他在坐立不安。他压力太大了，他有点坐不住了。还咬着指甲。”好的？