这些艰苦的工作使我疲惫不堪。
I'm worn out by all this hard work.

约翰在他母亲刚过世后度过了艰难时期。
John passed through a difficult period shortly after his mother's death.

艰苦能让人适应逆境。
Hardship disposes man to meet adversity.

多年艰苦的劳动使他丧失了健康。
He forfeited his health due to years of hard work.

在困难时期我们过着艰苦的生活。
We led a hard life in times of stress.

他们的艰难得到老师的理解。
Their hardness was understood by the teacher.

那是一段艰难的日子。
That was a hard time.

生活正在变得越来越复杂和艰难。
Life is getting more complex and difficult.