Shut the window tight.

把窗户关严了。

《新英汉大辞典》

All it takes is a tiny hole in an air-tight suit or a window left ajar in a supposedly air-tight lab, and you can wave goodbye to your friends, family and 100 million others.

一件气密防护服哪怕有一个小孔，一间气密实验室的窗户哪怕开一条缝，你的朋友，亲人和地球上的一亿人都有可能丧命。

youdao

Flexibility and hosing test for small water tight hatch cover(water tight door and window).

水密小舱口盖（水密门、窗）启闭灵活性、冲水检查。

youdao

In short, the Spurs organization has been nothing but classy in recent memory, they were stuck with an unnecessarily harsh stretch of road games jam packed into a tight window, and their coach made a decision to protect the long-term health and well-being of his players.

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We went up again, about 1400 feet, stuck our hand out the window with the QR scanner on, hung on tight to the phone and it scanned right away.

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There were no seats, and we sat on the floor in a tight bunch while Mr. Yusaf pointed out some of the higher mountains through the window.

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