sphincter

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。

Assess ability to control external sphincter.

评估病人外括约机控制情况。

Sphincter-preserved surgery should be performed avoiding the above problems.

应该在避免以上问题的前提下合理实施保肛手术。

Yo, Viv, babe. Would you come down here? The sphincter police won´t let me through.

薇薇安宝贝，请你下来，强壮警察不肯让我走去。

For nitric oxide could loosen the pyloric sphincter and increase the bile acid to the stomach.

幽门区一氧化氮含量变化与胃内胆汁酸的反流量相关。