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- The two mathematical models for earth dam break, a gradual dam break model due to overtopping and an instantaneous dam break model under some unknown urgent reasons, are set up. 针对土坝的溃坝失事,建立了逐渐溃坝和瞬时溃坝两种数学模型,在论述它们各自的机理后,结合实例验证其实用性,并对其各自特点分别加以分析和比较,从而为防汛部门的防洪预报提供科学依据
- She panted out the urgent message. 她气喘吁吁地讲出这个紧急口信。
- A part of this urgent task was allotted to us. 这项紧急任务的一部分分给了我们。
- This work is not urgent; we can do it tomorrow. 这件工作不急，我们可以明天再做。
- I was prevented from going by urgent business. 我因急事不能去。
- It's not urgent we can do it next week or whenever. 不是急事--我们可以下星期做或其他时候做。
- I have every reason to be confident of our victory. 我有充分的理由坚信胜利是属于我们的。
- We have reason to believe that he was murdered. 我们有理由相信他是被谋杀的。
- Don't bother about the letter, it's now urgent. 不必为这封信操心，这不是急信。
- What was the real reason for your absence? 你缺席的真正原因是什么？
- I want to have it send by an urgent telegram. 我想用加急电报把它发出。
- It is wise even in adversity to listen to reason. 灾难中听从理性的召唤也是明智的。
- It is urgent that we brace against typhoons. 我们必须做好防台风的准备。
- These people are in urgent need of relief. 这些人急需救济。
- How can you be excused for such a silly reason? 你怎么会因为如此可笑的借口而得到原谅呢？
- She was speaking to him in an urgent voice. 她正急迫地跟他说话。
- For some reason or other I am in his bad books. 由于某种原因，我为他所不满。
- He looks down on us by reason that we are poor. 因为我们穷，他瞧不起我们。
- I will sell the house at a price within reason. 我将以合理的价格出售这幢房子。
- My brother often scolds me without reason. 我哥哥经常无故责备我。
