如果头痛只发生在晚上，缺少新鲜空气和氧气常常是其原因。
If headaches only occur at night, lack of fresh air and oxygen is often the cause.
他们就是这种很有意思的人，我常常想到他们，因为谁都不会再见到他们，也不会知道后来发生了什么。
That is the sort of very interesting people, and I think of them so often because one will never see them again, never know what happened next.
这两种愿望常常配合得很好，但它们偶尔也会发生冲突。
While these two desires often work well together, they occasionally come into conflict.
人们常常假设，但没有证据证明，在所谓的“大迁移”中，大多数移民来自农村地区，这是由两个同时发生的因素推动的。
It has been frequently assumed, but not proved, that the majority of the migrants in what has come to be called the Great Migration came from rural areas and were motivated by two concurrent factors.
但是突然之间，就像在诉讼中常常发生的那样，潮流转向了。
But at that point, as often happens in litigation, the tide turned.
为了防止这样的事情发生，常常问你自己：可能发生的最坏情况是什么？
To stop that from happening, always ask yourself: what’s the worst that could happen?
为了防止这样的事情发生，常常问你自己：可能发生的最坏情况是什么？
To stop that from happening, always ask yourself: what's the worst that could happen?
因为在工程合约中这种情况常常发生，所以我在这个对话中，稍微将工作场景修改了一下。
Because this is frequently done in construction contracts, I changed the scene to that type of job for this dialog.
令人沮丧的是正在我旁边发生的事情常常也是故事的一部分。
It was frustrating because often what happens just at your right is part of the story.
这样的搜索常常需要回答一些基本问题，比如 “问题可能在何处发生？”
Such a search often begins by answering basic questions like, “Where does the problem appear to be happening?
但它们一旦发生，进一步的地震常常紧随而至，而这些地震的规律是容易掌握的。
Once they have happened, however, they are usually followed by further tremors, and the pattern of these is tractable.
或者这常常发生只是当她一身疲倦地回家时调这个简单的借口应付你？
Or, is this sort of thing always happening and she could just as easily make it home if she tried?
如果发生事故，掩盖事故的动机常常要比把事故处理好的动机来得强烈。
Should one occur, the incentive to hide it is often stronger than the reward for handling it well.
我们会说，这些事可不是会常常发生的。
尽管股市崩溃与熊市常常被同时提及，它们并不一定同时发生。
While crashes are often associated with bear markets, they do not necessarily go hand in hand.
只有一样东西能常常阻碍奇迹的发生，那就是恐惧心理。
And only one thing has ever prevented me from making this magic happen more often. Fear.
由于某些网站支持匿名用户ID，评论者可能图谋不轨，这样的事情常常发生。
Thanks to anonymous user IDs on some sites, reviewers can be anyone with any agenda. Often they are.
这种常常发生的短期症状非常令人烦恼，而对某些人来说，这可能是压力引起的。
The often temporary condition can be annoying and worrisome, and for some, can be triggered by stress.
金融危机的发生常常和大家做生意的方式有关，而不仅仅关乎那些遭受打击的市场。
Financial crises are always about the way people do business, and not just the deals they have struck.
我们常常会细想我们过去的那些消极事件，努力去理解它们发生的原委。
We tend to dwell on negative events from our past in an effort to understand why they happened.
肯尼亚尤其令人担忧，尽管常常发生旱灾，但像这样食物匮乏的情况却也少见。
Kenya is particularly worrying because while it has always known droughts, it has seldom been short of food.
你也就能够避免以下提到的伤害，普莱斯常常看到它们的发生。
You'll be able to prevent injuries like the ones below, which Price says he sees most often.
铺位不足时，囚犯就得打地铺，而这一情况常常发生。
When there are more prisoners than bunks, as is often the case, beds are laid on the floor.
这常常在登录时发生。
它常常在一名女性二十岁左右发作，(在发生的年龄方面)却有平均15年左右的误判发生。
It frequently begins when a woman is in her twenties but is usually misdiagnosed for an average of 15 years.
虽然事件常常被用于处理用户输入和其它异步发生的行为，但事件本身是以同步方式发生的。
While events are often used to handle user input and other actions that happen asynchronously, the events themselves happen in synchronous fashion.
当开发odbc应用程序时，常见的错误常常发生在为API提供参数值时。
When developing ODBC applications, common mistakes are often made while giving parameter values for API's.
但是，这个任务常常被忽视，被当作只在后台发生的微不足道的事情。
But it is often a task that is overlooked — seen as trivial, something that occurs only in the background.
但是，这个任务常常被忽视，被当作只在后台发生的微不足道的事情。
But it is often a task that is overlooked — seen as trivial, something that occurs only in the background.
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