The top is this helmet that comes up over his face and covers it pretty totally.

头部戴有头盔,覆盖面部,能完全遮住脸

耶鲁公开课 - 古希腊历史简介课程节选

I think the buildings all have, you know, good computer systems. There's wireless everywhere.

所有的建筑物都有优良的计算机系统，无线网络覆盖很广。

关于学校生活 - SpeakingMax英语口语达人

It makes them in one sense false; there is a falseness to the overlay that Carlo gives to Sal, and through which he then sees.

某种程度上把他们变成假的;,卡洛给Sal的覆盖有一种虚伪，后来他发现了。

耶鲁公开课 - 1945年后的美国小说课程节选

You shouldn't be able to hear very much either, and it mustn't have been too delightful to breathe out of the thing, although your nose is free, but it's covered by a nose piece.

而且也听不见什么了,同时,戴着头盔呼吸也不是很顺畅,虽然鼻子并不受束缚,但是上面有一块小薄片覆盖着

耶鲁公开课 - 古希腊历史简介课程节选