If headaches only occur at night, lack of fresh air and oxygen is often the cause.
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。
Such a unique view can only occur during those few seconds where the existing moonlight balances with the almost unseen first rays of sunlight.
这种独特的景象只出现在那几秒之内，在那几秒内，原有的月光和几乎看不见的第一缕阳光相平衡。
For this reason, this phase should only occur after you have redesigned the process.
因此，此阶段仅应在您重新设计了流程之后进行。
Fun events only occur for fun people.
有趣的事也只发生在有趣的人身上。
The definition of the class logging_proxy need only occur once.
类logging _ proxy的定义只需要出现一次。
A major accident can only occur if all these systems fail simultaneously.
只有在所有这些系统同时失效时才可能发生事故。
If yield occurs, return must only occur without any accompanying return value.
如果yield发生，return一定只发生在没有伴随任何返回值的情况中。
In RPC (and XML-RPC), encoding can only occur for a predefined set of data types.
在RPC(和XML -RPC)中，编码只可能针对预先定义的数据类型发生。
This type of situation is not serious and should only occur once for each Show Stat console command issued.
这种状况并不严重，应该只会在执行每个Show Stat控制台命令期间出现。
That's not to say it's not occurring because there's no reason why it should only occur there and not anywhere else.
那并不表示它不会发生，因为它没有理由会只发生在那，而不会发生在其他地方。
One final note: crashes and hangs not only occur on the Domino server, they can also happen on the Notes client.
最后指出一点：崩溃和挂起不只出现在Domino服务器上，也可以出现在Notes客户机上。
A spokesman for the Met Office said: 'Storms of this intensity only occur with large towering cumulonimbus clouds.'
气象部门的发言人说，“只有在大面积的积雨云汇聚的时候，这么强大的暴风雨才会出现。”
If this task is not performed, delivery can only occur when a user reloads or changes pages in your Web application.
如果未执行此任务，则仅当用户重新载入或更改Web应用程序中的页面时，消息才会传递。
These sorts of issues are very hard to test for because they generally only occur when an application is under heavy load.
由于这些类型的问题通常只发生在应用程序负载很重的情况下，所以往往非常难以测试。
Expansions may only occur in ordinary template text; they are not allowed inside attributes, or inside CDATA sections.
扩展表达式只能出现在普通的文本模板中；他们不被允许放在属性或者CDATA部分中。
The only caveat is the scalability of the messaging engine — which can only occur by placing it on a more powerful system.
仅需要注意的一点是消息传递引擎的可伸缩性，只有将其置于功能较为强大的系统上才能实现其可伸缩性。
The Parkfield quake was magnitude 6.0, compared to Izmit's 7.6 and Bouchon thinks foreshocks may only occur in very large quakes.
帕克·菲尔德地震是6.0级，而土耳其伊兹·米特地震为7.6级，所以布乔认为，前震可能只会在非常大的地震中出现。
Installation tasks only occur once, at image-building time, and the installed software becomes a permanent component of the image.
安装任务只在构建映像时运行一次，然后安装的软件就成为映像的永久组件。
Spring air seems to sparkle, somehow, with a gold and bubbly light, scented with those wonderful smells that only occur in spring.
春的空气宛若金璨欢快的阳光闪烁耀眼，那春天才有的美妙气息扑鼻而至。
Thus, your system administration staff should be trained to recognize that this warning should only occur when the certificate is updated.
因此，应该对您的系统管理员进行培训，使其认识到该警告只应该在证书更新时出现。
Health effects can only occur if someone is exposed to radiation, thus the main protective action someone can take is to prevent exposure.
只有当人暴露在辐射下，对健康的影响才会出现，因此人们要采取的主要保护措施就是防止暴露。
It can be argued that the decision should be placed after Global task 3 and that this task should only occur once in the process model.
有观点认为应将decision置于GlobalTask3任务之后，而且这个任务只能在流程模型中出现一次。
Is it just the power of fads? Does it only occur in the United States? Is it primarily academic competitiveness (new ideas as more publishable)?
这是一种时尚的力量吗？这仅仅发生在美国吗？这是学术竞赛的结果(新的观点更容易出版)吗？
Note that in many cases all of the powder used is present in the finished product, scrap losses will only occur when secondary machining operations are necessary.
可以看到在很多情况下所有使用的粉末都包含在制成品中，废料损失仅产生于需要辅助机加工时。
It will return on March 8 but the break up plot will only occur either on April 5 episode "Inglourious Bassterds" or the next one, "the Unblairable Lightness of Being".
第三季第13集将于3月8日回归荧屏，而分手剧情则会发生在4月5日《无耻混Bass》或者后面那集《不能Blair的生命之轻》里头。
And because superconducting electron pairs only occur near the Fermi surface, in the vicinity of the images of Fermi surface, the study on this issue is very important.
由于超导凝聚电子对一般只发生在费米面附近，费米面的图像的研究，对于这个问题的研究有很重要的意义。
Fire tornadoes, also known as "fire whirls", only occur under certain conditions and form a vertical column of flames and hot air that behaves much like a normal tornado.
火焰龙卷风，也被称作“火旋风”，非常罕见。发生时火焰直线上升，如同龙卷风中空气的运行轨迹。
Fire tornadoes, also known as "fire whirls", only occur under certain conditions and form a vertical column of flames and hot air that behaves much like a normal tornado.
火焰龙卷风，也被称作“火旋风”，非常罕见。发生时火焰直线上升，如同龙卷风中空气的运行轨迹。
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