我需要在我的衬衫上缝一个新纽扣。

I need to sew a new ___button on my blouse.

那是一条长裙，前面有一些方形纽扣。

It was a long dress with some square ___buttons on the front of it.

我夹克上的纽扣掉了。

The ___button on my jacket came off.