Scientists are searching for ways to destroy nuclear weapons powerless and no longer useful.
科学家们正在探索在空间摧毁核武器的方法－也就是使该武器失去威力或不再起作用。
We are powerless in the face of such forces.
面对这样强大的力量, 我们无能为力.
I am powerless to intervene in the matter.
我对调停此事无能为力。
