窗户通常是封闭的。

Windows are usually sealed off.

《柯林斯英汉双解大词典》

一道楼梯和一台电梯连接两层楼和封闭的屋顶平台。

Both a staircase and a lift connect the two floors with an enclosed terrace on the roof.

youdao

现在你确实可以去了。据我所知，利比亚已经开放了；它不再是一个封闭的领域。

Now you can actually go. As far as I know, Libya is now open; it's no longer a closed territory.

youdao

We control how we use time, we control the temperature in the environment, and hermetically seal ourselves in things.

我们控制时间的利用，我们控制周边环境的温度,我们把自己封闭在各种事务中，与世隔绝。

普林斯顿公开课 - 人性课程节选

The polis, as Aristotle as well as Plato clearly understand, is a small society, what could be called today a closed society.

如亚里士多德及柏拉图清楚明白,是一个小型的社会，即今日所称的封闭社会。

耶鲁公开课 - 政治哲学导论课程节选

These are gas-tight feedthroughs.

这些是封闭的的引线。

麻省理工公开课 - 固态化学导论课程节选