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She was sent abroad on a difficult assignment. 她被派出国执行一项艰巨任务。
Gene mapping for quantitative trait loci (QTL) was a difficult assignment in modern genetics. 摘要:现代遗传学分析中的一项艰钜任务是解决数量性状的基因定位工作。
This will be a difficult assignment for our comrades,so we should see that those who are sent have first straightened out their thinking,and we should only dispatch comrades who are willing to work there. 我们的同志去工作，是一件苦差事，思想要搞通，要有一些愿意做这个工作的同志去那里工作。
This will be a difficult assignment for our comrades, so we should see that those who are sent have first straightened out their thinking, and we should only dispatch comrades who are willing to work there. 我们的同志去工作，是一件苦差事，思想要搞通，要有一些愿意做这个工作的同志去那里工作。
He was a legend in the news industry because of his remarkable dedication,energy and knack4 for getting to the most difficult assignments. 他以其惊人的敬业精神、充沛的精力，以及善于完成最艰巨任务的能力而成为新闻界的传奇人物。
He finished the assignment completely. 他全面完成了分配的任务。
The boy pegged away at a home assignment. 男孩毫不懈怠地做老师布置的家庭作业。
It must be difficult to play various personae in the same movie. 在同一个电影中扮演不同的角色肯定不容易。
Navigation is difficult on this river because of the hidden rocks. 因为河上有暗礁，所以在这条河上航行很困难。
It was difficult to tell his exact age. 很难判断他到底多大岁数。
He is the best man who can finish the assignment. 他是能完成这项任务的最佳人选。
The boy pegged away at a homework assignment. 男孩孜孜不倦地做老师指定的家庭作业。
It is difficult to express it in terms of science. 要用科学的字眼来表达它是很困难的。
He is responsible for the assignment of jobs. 他负责分派工作。
It was difficult to gauge how people would respond. 大家的反应如何难以估计。
She gladly accepted the assignment. 她高兴地接下任务。
She handled a difficult argument skilfully. 她巧妙地应付了一场艰难的辩论。
How are you going to get through the assignment? 你将如何完成作业呢?
He find it difficult to give shape to his idea. 他觉得很难把他的想法，明确表达出来。
It is difficult to decide between the two opinions. 在这两种意见之间抉择是困难的。