Doctors fear he may never fight again.

医生认为他可能再也不能重返拳坛了。

《牛津词典》

My parents almost never fight.

我的父母几乎从不吵架。

youdao

My cat and dog never fight; they live together in perfect harmony.

我的猫和狗从不打架，他们非常和睦地生活在一起。

youdao

During a fight, the wrestlers use moves that would never be permitted in a real wrestling match.

VOA: special.2010.02.19

He says Pakistan has never trained security forces to fight terrorists.

VOA: standard.2009.03.30

"They have also shown how bacterial ribosomes can be stopped dead in their tracks by various antibiotics, thereby providing insights that help researchers design new drugs to be used in our never-ending fight against bacterial infections,"

VOA: standard.2009.10.07

It will only ever be used in self-defence, and will never fight outside Swiss territory.

BBC: Knives out for conscription into Swiss army

And what if dangerous men come to believe that America will never fight?

ECONOMIST: Lexington

Today, although they often disagree, they say they almost never fight.

NPR: Debating Marriage's Effect on Poverty