They prepared to repel the invaders.

他们准备赶走侵略军。

《牛津词典》

The fabric has been treated to repel water.

这种织物进行过防水处理。

《牛津词典》

They have fifty thousand troops along the border ready to repel any attack.

他们沿边界有5万军队，随时准备击退任何进攻。

《柯林斯英汉双解大词典》

Officers responded by firing tear gas shells and using their bamboo sticks to repel demonstrators.

VOA: standard.2009.03.28

And since we have two bars that are together like this, once they're both loaded up with electrons there's going to be negative charges that repel, so the electrons will want to get as far away as possible, and they're on their slow way to doing that, to getting as far away from each other as possible.

因为我们有两个棒像这样在一起，一旦它们加载了电子,就会因为有负电荷而排斥，所以这些电子就会,互相离开的尽可能远，它们的这个过程很慢，离开的尽可能远。

麻省理工公开课 - 化学原理课程节选

The constitutional role of the guard has only one military function, that's to repel invasion.

NPR: Critics Question Using Nat'l Guard Troops at the Border

The tests show that it is possible to harden a PC to repel attack.

FORBES: Six Simple Steps Proven To Keep Your Windows 7 PC Safe From Hackers And Malware

Cedar and lavender to repel insects work best in closets and drawers that stay tightly closed.

WSJ: Ask Teri: How to Keep Moths From Eating Sweaters