bucklebuck•le /'bʌkl/

vt

1. 用扣子(或扣带)把…系紧，扣住

• buckle (up)the belt 系上安全带

2. (使)弯曲；(使)变形

• The heat buckled the road surface. 炎热把路面烤得变了形。

vi

1. 扣住，扣紧；连接

2. 弯曲，变形；起皱

• The iron plate buckled under the heat of the flame. 铁条在火焰的炽烤下变弯了。

词组buckle down 倾力于，开始认真从事

• You'd better buckle down to read some books. 你最好开始认真读些书。