讲解文本:
straight face 板着脸,不动声色,一本正经的样子 It was difficult to keep a straight face when I heard his joke. 听完他的笑话,很难板着脸不笑。 My father never laughs. What he gives us is always a straight face. 父亲从来不笑。他面对我们时候总板着个脸。
疯狂练习吧!