难:1. problem2. difficult3. difficulty4. not good其它相关解释:例句与用法:1. 就英文而言,它并不像你所认为的那样难。 So far as English is concerned, it is not so difficult as you might think.2. 我发现德语语法很难学。 I found German grammar to be very difficult.3. 他可以招摇撞骗闯过任何难关。 He could bluff his way through any difficulty.4. 我们突然遇到各种各样的难题。 All sorts of problems assailed us suddenly.5. 我解答不了这个难题。 I can't solve the problem.6. 他在难以作出决定时往往踌躇不前。 He tends to recoil from making difficult decisions.7. 大家的反应如何难以估计。 It was difficult to gauge how people would respond.8. 我们很难观察月亮的另一边。 The far side of the moon is difficult for us to observe.