to smother a yawn

• 忍住呵欠

to smother a yawn的用法和样例：

例句

1. The honeymoon is not until we cease to stifle our sigh and begin to stifle our yawn.
   在我们忍不住叹气并开始忍住呵欠之前，蜜月是还未度过的哪。