皮肤的皱褶盖住它们的眼睛和耳朵，防止进水，它们的鼻子内有可关闭的防水封垫。

Folds of skin cover their eyes and ears to prevent water from entering, and the nostrils close with a watertight seal.

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如果想要Tab可关闭，将Tab的Closable属性设置为true。

If you want to make a Tab closable, set the closable property of a Tab to true.

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彼得挥舞着通往天堂极乐的钥匙，他可以任意打开关闭，凡人可借此得救的大门，正如他可以任意操控通往教会的大门一样。

Peter wields the keys of the kingdom of heaven and can open and shut the doors of personal salvation, just as he can open and shut the doors of the church.

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Peter wields the keys of the kingdom of heaven and can open and shut the doors of personal salvation, just as he can open and shut the doors of the church.

彼得挥舞着通往天堂极乐的钥匙,他可以任意打开关闭，凡人可借此得救的大门，正如他可以任意操控通往教会的大门一样。

耶鲁公开课 - 弥尔顿课程节选