cheer up 高兴起来；振作起来vt.1.欢呼,向…欢呼；向…喝彩:The movie star was warmly cheered as he got on the stage.这位影星登上舞台时受到人们的热烈欢呼.2.使重新感到喜悦或抱有希望；以欢呼声激励；为…加油...