It often happens that a number of applicants with almost identical qualifications and experience all apply for the same position.

经常会发生这样的情况：许多申请者拥有几乎相同的资格和经验，却同时申请同一个职位。

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It often happens that little beginnings have great endings.

微不足道的开端往往会有伟大的结果。

《新英汉大辞典》

It often happens that success comes after many failings.

经过多次失败后才获得成功是常有的事。

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We'll talk more about this later, but it often happens that when you change your program to solve one problem you break it, and things that used to work don't work.

我们以后会更多的去讨论者一点，但是经常发生的情况是当你因为,一个问题修改你的程序的时候,你修改了程序,但原来没问题的模块。

麻省理工公开课 - 计算机科学及编程导论课程节选

Often that signal gets amplified so it can be used, same thing happens inside cells and there's some output that's generated.

通常这些信号要放大后才会产生作用,诱发细胞内发生一些变化,并产生某种输出信号

耶鲁公开课 - 生物医学工程探索课程节选

We have a couple of passages, one in the book of Numbers, one in the book of Job, which describe this condition in a way that identifies it with death. An aborted fetus is often not often, it happens once in the book of Job.

有两篇文章，一篇在《民数记》,一篇在《约伯记》里，描述了这种,意味着死亡的状况，比如说，一个被流产掉的胎儿就,但这些例子不多，只在《约伯记》里出现了一次。

耶鲁公开课 - 旧约导论课程节选

But it happens more often that you would think.

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Then, as wars develop and when wars end, it's often said that what happens shows how bright ideals get tarnished as the fight against injustice breeds its own new problems.

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When that happens, it often sets the stock in motion, on its next visit to new highs.

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