She stifled another yawn and tried hard to look interested.

她又忍住了哈欠，竭力显出感兴趣的样子。

《牛津词典》

We see another yawn, and our impulse is to follow suit.

当我们看到别人打哈欠的时候，我们也会跟着打哈欠。

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During tests, researchers found that while men and women yawn spontaneously at equal rates, women are more likely to yawn in 'reply' to another person's yawn.

在测试过程中，研究人员发现，相同频率下，男人和女人自发地打哈欠时，女性更可能会受他人影响打哈欠。

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Another gave it a big yawn.

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The precious metals reacted with a yawn to news that European officials late Monday agreed to give Greece another shot of bailout money.

FORBES: A.M. Kitco Metals Roundup: Comex Gold Modestly Lower on Chart Consolidation; U.S. Data Awaited