How thick are the walls?

这些墙有多厚？

《牛津词典》

How thick the glass is?

这个玻璃有多厚？

youdao

Rub that and see how thick and warm it is.

揉一揉，看看它有多厚，多暖和。

youdao

They lie entranced, thick as -- how many angels were there?

他们密密麻麻的漂浮着--哪里有多少天使？

耶鲁公开课 - 弥尔顿课程节选

They are a function of the instant atomic arrangement, how we arrange the atoms: same composition, simple example, one inch thick pine board, one inch thick plywood.

那是即时的原子排序,的功能，我们如何排序原子，同样的成分，简单的例子，一英寸厚的松木板，一英寸厚的胶合板。

麻省理工公开课 - 固态化学导论课程节选

Depending on how the devices are constructed (namely, how thick each layer is) they can last for hours, days, months or even years.

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So it is ditching prescriptive standards which say, for example, how thick a door must be rather than merely how long it should be able to withstand a fire.

ECONOMIST: Deregulation in Japan

When was the last time you were really bothered about exactly how thick or heavy your phone was, so long as it fit in your hand and pocket without making you strain or your clothes sag?

FORBES: Acer Makes Things Interesting, Undercuts iPad 2 On Price