to yawn
01
打哈欠, 因无聊或疲倦而张大嘴深呼吸
to unexpectedly open one's mouth wide and deeply breathe in because of being bored or tired
Intransitive
例子
Feeling exhausted, she could n't help but yawn during the long meeting.
感到精疲力竭，她在漫长的会议中忍不住打哈欠。
02
打哈欠, 张开
to be exceptionally large or wide, often in a way that appears open or gaping
Intransitive
例子
The gap between the two buildings yawned, too wide to cross without a bridge.
两座建筑物之间的缝隙张得很大，没有桥太宽了无法跨越。
Yawn
01
哈欠, 不由自主的哈欠
an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
