make someone yawn的用法和樣例：
例句
- Cats yawn because they realize that there's nothing to do.
貓打呵欠因為它們認識到無(wú)事可做。 - The researchers found that those who breathed through the nose rather than the mouth were less likely to yawn when watching a video of other people yawning.
研究人員發(fā)現，在看別人打呵欠的視頻時(shí)，用鼻子呼吸的人比用口腔呼吸的人打呵欠的幾率要小。
