Sniffing is regulated by the soft palate, a flap of tissue in the back of the throat that directs the flow of air through the mouth and nose.

闻嗅由软腭控制，那是位于喉咙后面的组织，通过不停来回拍动来导向经过嘴和鼻子的气流。

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Flap problems. Folding back or removing the flap from the front of your eye during surgery can cause complications, including infection, tearing and swelling.

在手术中从眼睛前部叠回去或者移走的组织可以引起并发症，包括感染，流泪和肿胀。

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But getting back to something else in your e-mail-i think what your cat Casper did when he was hiding behind that flap of bedspread falls under what I call Feline Physics.

让我们回到您邮件里的另一个话题——您的猫卡斯珀藏在床单后面的情况，我个人称之为猫科物理学。

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