同义词是arduous。
difficult
adj.困难的;费力的;难做的;难解的;问题很多的;充满艰难困苦的;麻烦的;难以讨好的;难以取悦的;不愿帮助的 扩展资料
Young people today face a very difficult future at work.
如今的年轻人面临着充满困难的`工作前景。
It was a difficult situation, when you think about it.
仔细想来，当时处境是很困难的。
Children can be difficult as we know only too well.
小孩子往往很难对付，对此我们都非常清楚。
