艰苦

他经历了很多艰辛苦难。

tā jīnglì le duōshǎo jiānkǔ kǔnán

He endured many hardships.

我们应该学习在艰辛苦难中保持乐观。

wǒmen yīnggāi xuéxí zài jiānkǔ kǔnán zhōng bǎochí lèguǎn

We should learn to remain optimistic in adversity.