同義詞是arduous。

difficult

adj.困難的;費(fèi)力的;難做的;難解的;問題很多的;充滿艱難困苦的;麻煩的;難以討好的;難以取悅的;不愿幫助的 擴(kuò)展資料

Young people today face a very difficult future at work.

如今的年輕人面臨著充滿困難的`工作前景。

It was a difficult situation, when you think about it.

仔細(xì)想來，當(dāng)時(shí)處境是很困難的。

Children can be difficult as we know only too well.

小孩子往往很難對(duì)付，對(duì)此我們都非常清楚。