1.One of the hardest things a dad has to do is watch his young son or daughter take on a difficult task and fail at it.
为人父，最难的事情之一就是看着自己的子女迎难而上，失败而终。
2.So we have a little bit of time available, so I'm going to ask Evan to do a really difficult task.
这样我们还有一点时间，所以我们让Evan做个难一点的任务。
3.He will not be engaged in the superficial pursuits of tourists but in the difficult task of trying to make sense of an alien culture.
他不会去关注一般游客所追求的那类浮于表面的东西，而是去完成一个艰难的使命——诠释异域文化的内涵。
4.Fighting the flu has always been a difficult task, since the virus is constantly mutating and forming new strains.
对抗流感一向是个大难题，因为病毒会不断突变，形成新的种类。
5.But convincing research teams that this patchwork process is plagiarism can be a difficult task for editors.
但是令人信服的科学研究小组用这种方式进行剽窃对于编辑们来说，是一个棘手的事。
6.Said the Master, when asked his opinion, "I know of a more difficult task than any of those three" .
他们就这个问题请教大师的意见，大师说道：“有项工作比这三个都要难。”
7.That'sa good question, because as you know designing complex chips is a very, very difficult task set.
这是一个很好的问题，因为正如你所知道的复杂芯片设计是一个非常。
8."It's a difficult task, " he said. "Yet the difficulty of this task is no excuse for avoiding it. "
布什总统说：“这是一项艰难的任务。然而任务艰难并不能成为回避问题的借口。”
9.He finished a difficult task before long he worked in that company, and all of his colleagues looked at him with new eyes.
他进公司不久就独立完成了一项艰巨的任务，同事们都对他刮目相看。
10.for a complex rock foundation , the evaluation of shapes of sliding faces , location , distribution and direction is quite a difficult task.
对一个复杂的岩石地基来讲，滑移面的形状、位置、分布和方向的事先假设都是十分困难的。