As he gets nearer to the pulsing sphincter of a mouth, he starts to hack at the gas bag overhead.

但他还是离水母蠕动的嘴唇越来越近，他开始砍向头上的气囊。

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Dolphins lack vocal cords, nevertheless creating sounds: a complicated system of whistles, squeaks, moans, trills, and clicks are produced by sphincter muscles inside the blowhole.

海豚没有声带，但却能发声：一个由口哨声、吱吱声、呻吟声、颤音和咔嚓声组成的复杂系统是由喷水孔内的括约肌产生的。

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H. Another minimally invasive procedure for the treatment of stress incontinence caused by intrinsic sphincter deficiency is periurethral injection.

治疗由于解剖引起的压力性尿失禁其他的微创方法如选择性的血管治疗。

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Shame on The Economist for grovelling at the sphincter of politically correct left-wing shibboleths.

ECONOMIST: Letters | The

Different control valves and rams can close in the well to various degrees (i.e. think of the difference between a sphincter and a guillotine).

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Frequent heartburn or acid reflux are symptoms of a condition called GERD, or gastroesophageal reflux disease, which occurs when a sphincter muscle in the lower esophagus stops working properly.

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