那头动物愤怒得呲牙咧嘴。
但谁还会指责挂在鲁宾脸上那种疯了似的呲牙咧嘴的笑令人讨厌呢？
只要她家一来客人，这幼犬就紧贴着她抬起身，冲着客人们呲牙咧嘴地咆哮。
Because when invited guests come to her home, the pup plasters himself next to her, leans up against her and growls at them.
此犬颈毛倒竖，呲牙咧嘴地恶嚎，又吠叫着退却，逃跑时结结实实尿了一路。
The pup raised her hackles, growled, barked and backed up, releasing a huge trail of urine as she escaped.
当人被辣到呲牙咧嘴、眼泪汪汪的时候，血管其实便会松弛，这是由于辣椒素增加了信号分子一氧化氮的数量。
While lips burn and eyes water, blood vessels actually relax, thanks to increased production of the signaling molecule nitric oxide.
他看到的是一张瘦削疲惫的脸孔，尽管小丑一直保持着微笑或是呲牙咧嘴的怪笑，但是在隐士看来却显得那么悲哀。
The face he saw was thin and tired, and though it kept a smile or a grin for the people, it seemed very sad to the hermit.
他看到的是一张瘦削疲惫的脸孔，尽管小丑一直保持着微笑或是呲牙咧嘴的怪笑，但是在隐士看来却显得那么悲哀。
The face he saw was thin and tired, and though it kept a smile or a grin for the people, it seemed very sad to the hermit.
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