| 单词 | 保持严肃 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔bearing〕She maintained her serious mien until the interview was over.直到访问结束她一直保持严肃的态度。美国传统〔serious〕Please try to stay serious! 请尽量保持严肃！牛津搭配〔straight〕She couldn't trust herself to keep a straight face.她没有把握自己会保持严肃的表情。麦克米伦高阶I can never play jokes on people because I can't keep a straight face.我从来不能和人开玩笑，因为我不能保持严肃的表情。剑桥国际 |
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