buck up

基本解释

He knew that with a change of scene he would soon buck up.
他知道随着改变环境他会打起精神来的。
But buck up—online user guides explain the ATM’s OS, which is often primitive.
打起精神，网上用户指南将透露出ATM的操作系统，这也是最原始的了。
"I kept telling myself to buck up and be strong -- to man up, " he said. "I didn't want to be part of a therapy group because they would think I was crazy or weak.
“我告诉我自己打起精神来，并且变得更强壮—男人起来，”他说，“我不想成为受治疗的群体，因为他们会认为我发疯了，或很懦弱。

Is it government's responsibility to correct this or do people just need to buck up and change their lives in a way that turns these numbers around?
纠正这些行为是政府的责任,还是只需人们行动起来,改变自己的生活方式,来挽回这些数字代表的趋势
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

It would be easy to say that public school teams should just buck up and face the competition.
FORBES: States Strain For Creative Solutions To High School Sports Class Warfare
Fox, which saw its ratings decline last fall, is counting on the show to buck up its bottom line.
FORBES: Idol Worship
Stevens, the one time prosecutor, seems to be expecting the worst as he tells his friend Allen to buck up.
NPR: Taped Phone Conversations Played At Stevens Trial