怀孕6个星期后，胎儿的大小相当于小拇指的指甲。

Six weeks after conception your baby is the size of your little fingernail

指甲表面出现条条不光滑是欠那些维生素呢？

Does fingernail surface appear be to owe those vitamins glossily?

乔西坐在书桌旁，涂着指甲油。

Josie was sitting at her desk, varnishing her nails.

她的指甲上涂了一层鲜亮的红指甲油。

Her nails were varnished a brilliant shade of red.

她咬指甲都咬到了活肉。

She has bitten her nails down to the quick.

我感觉她的指甲抠进了我的手腕里。

I felt her nails sink into my wrist.

她咬手指甲。

She gnawed at her fingernails.

别咬指甲了！

Stop biting your nails!

别咬指甲！

Stop biting your nails!

她还是不喜欢那个指甲脏脏的女子。

She still did not like the woman who had dirty fingernails

她试图给他剪指甲，他不让。

When she had attempted to cut his nails he resisted.

我用拇指指甲把台灯上的螺钉拧紧了。

I used my thumbnail to tighten the screw on my lamp