1.PHRASAL VERB 短语动词 振作…的精神；使受到鼓舞 If you buck someone up or buck up their spirits, you say or do something to make them more cheerful.

  【语法信息】：V n P

  【语法信息】：V P n (not pron)

  【语域标签】：BRIT 英

  【STYLE标签】：INFORMAL 非正式

2.PHRASAL VERB 短语动词 振作；积极行动起来 If you tell someone to buck up or to buck up their ideas, you are telling them to start behaving in a more positive and efficient manner.

  【语法信息】：V P

  【语法信息】：V P n (not pron)

  【STYLE标签】：INFORMAL 非正式