boost morale

基本解释

A good laugh can help you build rapport, boost morale, and deflate tension when working under stressful situations.
一个好笑话能帮助你建立和谐关系、提升士气、缓解工作压力下的紧张情绪。
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Boost morale by allowing the team to see progress through meetings supplemented by one or more subsystem demonstrations.
通过让团队在一个或者多个子系统演示的会议中看到项目的进展来鼓舞项目人员的士气。
The whole EU would never agree to a deadline, he recognises, but even the idea of an end-point would helpfully boost morale.
他也承认，欧盟作为一个整体不会同意设定期限，但即使只确认一下入盟定会有结果也有助于增强信心。

It was meant to create expertise, expose students to western society, and boost morale.
ECONOMIST: The Finno-Ugrics
Here's what a consortium of radio stations is putting on the air in something of a campaign to boost morale.
NPR: Shifting Visions of a Rebuilt New Orleans