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yawn的现在完成时为：yawned...
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yawn的现在进行时为：yawning...
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She stretched her arms out and gave a great yawn.她伸了个懒腰，打了个大哈欠。She makes no attempt to stifle a yawn.她忍不住打了个哈欠。The debate was a mockery. A big yawn.这场辩论实在可笑。简直是无聊透顶。...
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yawn的音标：yawn的英式发音音标为：[jɔ:n]yawn的美式发音音标为：[jɔn]...
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The concert was a predictable yawn.果不其然，那场音乐会很乏味。She stretched her arms out and gave a great yawn.她伸了个懒腰，打了个大哈欠。Her yawn suggests that she is sleepy.她打哈欠表示她很困了。The meeting was one big yawn from start to finish.那会议自始至终十分无...
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vi.打呵欠，张开，裂开，张开大口n.呵欠，无聊的人或事，裂口...
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yawn的复数形式为：yawns...
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yawn的一般过去时为：yawned...