We face extremely daunting tasks and complex domestic and international situations. We must work very hard if we are to achieve success in our work on all fronts and meet the goals we set.
摆在我们面前的任务十分艰巨，国内外形势也非常复杂，做好各项工作，完成预期目标，需要付出极大努力。
We face extremely daunting tasks and complex domestic and international situations. We must work very hard if we are to achieve successes in our work on all fronts and meet the goals we have set.
摆在我们面前的任务十分艰巨，国内外形势也非常复杂，做好各项工作，完成预期目标，需要付出极大努力。
We must work hard at all our lessons.
我们必须努力学习各门功课。
We are all born ignorant, but one must work hard to remain stupid.
我们生来都是无知的，但我们必须努力保持愚昧。
We must work hard at all the lessons.
我们必须认真学习所有公课。
We must work hard at all knowledge of science and technology and at the same time transfer our knowledge to the practical power of producing.
我们应该努力学习每一门科技知识，同时将所学的知识转化成生产实践。
The writer is working on a new book. The scientist is working on a new plan. We must work hard on all subjects.
这位作家正在写一部新书。科学家正在研究新计划。我们应该努力学习各门功课。
We face extremely daunting tasks and complex domestic and international situations. We must work very hard if we are to achieve successes in our work on all friends and meet the goals we have set.
摆在我们面前的任务十分艰巨，国内外形势也非常复杂，做好各项工作，完成预期目标，需要付出极大努力。
We must work hard and give our all in these last two games before the break.
在假期前的最后两场比赛里，我们必须努力，并且付出一切。
We must work hard on all subjects.
我们应该努力学习各门功课。
We must work hard on all subjects.
我们应该努力学习各门功课。
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