获得成功的唯一途径就是艰苦奋斗。

The only passport to success is hard work.

《牛津词典》

《神经元》杂志上的一项新研究表明，一个人只需六周的艰苦训练就能获得超强的记忆力。

New research in the magazine Neuron suggests that a person will get a super memory with just six weeks of hard training.

youdao

他靠艰苦的努力获得了成功。

He succeeded by dint of hard work.

《牛津词典》

It's this kind of wealth that allow them to fight this long, hard war of independence, which they finally win.

这些所带来的财富,就成了他们为之奋斗的原动力,使得他们在艰苦的独立战争中获得胜利

耶鲁公开课 - 欧洲文明课程节选