The idea was would they kill each other.

当时的想法是他们会互相杀害。

youdao

But if we withdrew, they would certainly kill each other.

我们退兵，他们肯定会自相火并。

youdao

And their job requires they must kill each other and they can't kill each other.

他们的工作要求他们必须杀死对方，他们不能自相残杀。

youdao

He said he slept well in these wooden houses and that probably is because of his very unhappy childhood listening to relatives shouting at each other and plotting to kill each other in the big house.

他说在那些木屋里睡的很好,这可能是缘于他那并不愉快的童年,在这冰冷的大房子里,亲戚们的高声谩骂,彼此的秘谋暗杀,给他的童年留下了阴影

耶鲁公开课 - 欧洲文明课程节选

When monkeys get together to kill and eat somebody they make a kind of a laughing noise and chimpanzees laugh when they tickle each other.

猴子一起猎杀其他动物时,它们会发生出一种笑声,黑猩猩胳肢时也会笑。

耶鲁公开课 - 心理学导论课程节选

Whereas if you're in a rich country, it doesn't make sense to kill each other.

NPR: Tribalism and Stability in Kenya

The most obvious casualties are the formal combatants, those seeking to kill each other on the battlefield.

FORBES: Endangered Wartime Interpreters: The U.S. Should Protect Those Who Protect Us

Either we will find a way to live with each other or we will kill each other.

BBC: Barenboim: Conflict 'eats at Jewish soul'