Yawn是英语中表示打呵欠或裂开的词汇，兼具动词和名词词性。 作动词时，其含义包括生理性打呵欠动作或物体张开、裂开；作名词时指代具体的呵欠行为或形容乏味的事物。

a yawn [ S ] informal something or someone that is very boring 乏味的事物（或人）

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必应词典为您提供yawn的释义，美 [jɔn]，英 [jɔːn]，v. 打哈欠；非常宽；难以逾越； n. 呵欠；无聊的人或事；无趣的想法； 网络释义： 打呵欠；张开；打个哈欠；

The English yawn continues a number of Middle English forms: yanen from Old English ġānian, and yenen, yonen from Old English frequentatives ġinian, ġionian, from a Germanic root *gīn-.

A two-hour meeting - what a yawn! Frankly, most of these shows are a yawn. So far, the contest has been a total yawn. His latest album is, sadly, a yawn that lacks the verve of his debut.

Mar 15, 2024 · When you yawn, a wetting agent known as a surfactant coats the tiny air sacs (alveoli) in your lungs, which helps keep them open.

If you yawn, you open your mouth very wide and breathe in more air than usual, often when you are tired or when you are not interested in something. She yawned, and stretched lazily.

YAWN definition: to open the mouth somewhat involuntarily with a prolonged, deep inhalation and sighing or heavy exhalation, as from drowsiness or boredom. See examples of yawn used in a …

: to open the mouth wide and take a deep breath usually as an involuntary reaction to fatigue or boredom transitive verb 1 : to utter with a yawn 2 : to accomplish with or impel by yawns