buckle up
phrasal verbbuckle up (North American English)
(British English belt up)
- (informal)
to fasten your seat belt (= a belt worn by a passenger in a vehicle) 系上安全带 Get in the car and buckle up. 上车,系好安全带。
Oxford Collocations DictionaryBuckle up is used with these nouns as the object:- strap