button die

例句：

1. 1.She carefully buttoned up her coat.
   她小心翼翼地把外套扣好。
2. 2. The buttons on his shirt were all missing.
   他衬衫上的纽扣都掉了。
3. 3. He used a button to hold the door open.
   他用一个纽扣把门打开。