3.betray vt.显露出(本来面目), 背叛,泄露, 辜负 betray oneself/ betray that…无意中露出本性;暴露 betray + n. + to 出卖,背叛
他们一张开嘴就露了陷。 They betrayed themselves every time they open their mouths. 他背叛了祖国, 向敌人投降。 He betrayed his country to enemy. 他的脸显露出他很生气。 His face betrayed that he was angry. I won’t betray his trust. 我不会辜负他对我的信任。