Its purpose is not to shield radioactive emissions but to prevent the release of radioactive dust and other materials, and to keep out rainwater, which could carry contaminants into the water table.

它的作用不是用来遮挡放射性排放而是阻止放射性烟尘和其它物质的释放，以及遮挡雨水以防止雨水携带污染物流入地下水。

youdao

It must have been a terrible moment for the Witch when she suddenly realized that her power of turning people into dust, which had been quite real in her own world, was not going to work in ours.

当女巫突然意识到，她那种能把人变成灰烬的魔力在她的世界里那么真实可行，而在我们这里却毫无用处时，对她来说这简直是个可怕的时刻。

youdao

He also worked on the unmanned flights that preceded them, which confirmed a prediction that he had made from his study of lunar craters: contrary to popular belief, an astronaut landing on the moon would not sink into the dust.

ECONOMIST: Gene Shoemaker

Since Eros's gravity is so small (a person on its surface would weigh only a few dozen grams), this dust probably could not have fallen into the craters in the way that it would on a heavier body.

ECONOMIST: Eros