n.[C]

1. 带扣；扣子；搭钩
2. 扣形装饰物；饰扣
3. 弯曲；鼓起；褶皱

vt.

1. 扣住；扣紧；使连接[（+up）]
   He buckled himself into his seat.

   他坐在椅子上扣上了安全带。

   He buckled his belt tightly.

   他紧紧地扣上了皮带。

2. 使弯曲（或鼓起）；把……弄皱
3. 使全力以赴
   She was buckled to the housework.

   她致力于家务。

vi.

1. 扣住，扣紧；连接
   The child's shoes won't buckle.

   小孩的鞋子扣不起来。

2. 弯曲，变形；起皱
   The metal buckled in the great heat.

   这金属在高温下变形了。

3. 垮掉；让步

n.

v.

1. fasten or decorate with a buckle.
2. bend and give way under pressure.
3. (buckle down) tackle a task with determination.