button capacitor

例句：

1. 1.The buttons on his coat are all different sizes.
   他外套上的纽扣大小都不一样。
2. 2.She carefully sewed the button onto the shirt.
   她小心翼翼地把纽扣缝在衬衫上。
3. 3.The buttons on her dress were all shiny and new.
   她裙子上的纽扣都是闪闪发光的新的。