困难 - 艰巨的任务

with difficulty or extra effort

付出很多努力

to start to deal with an inevitable challenge or difficulty

处理有挑战性的事情

something so unpleasant that a person has to struggle to accept it

难以接受的事实

not difficult in words compared to how difficult it can be in practice

很难做的事

a situation that is complicated, awkward, or annoying

混乱的情况

someone or something that is difficult to understand, deal with, or overcome

难以处理的事情

used to say that something is very difficult and one will need to put a lot of effort into doing it

遇到难以逾越的障碍

used to express a sense of uncertainty or nervousness before attempting something

to try to do something that is very unlikely to accomplish

试图做一些看似不可能的事情

to be very successful that demands a lot of hard work in order to be outdone or surpassed

遭遇激烈竞争

a very difficult or unreasonable request

不合逻辑的要求

used to emphasize that doing something is not easy at all

并不容易