你的急救工具箱必须是防水的；不过，你通常需要做的工作就是密封拉链袋里面的用品。

Your kit should be waterproof; however, sealing your supplies inside of zipper baggies is usually the job all you need to do.

youdao

这些加工过程对人体的危害很大，因此大多数工作都在密封室中进行，机械手臂会把晶圆从一个加工区移到另一个加工区。

Because those processes aren't exactly friendly to humans, much of this work happens inside sealed Chambers where robot arms move the wafers from one processing station to another.

youdao

世界各地的标本在被运到这里时，还被密封在岩石或发现源地的污泥之中，只有经过化石准备工作以后，那些头颅、股骨和牙齿才能显露出来。

Specimens from all over the world come in, still encased in the rock or mud where they were found, and it's the job of the fossil preparators to get the skulls, femurs and teeth out.

youdao