Solar storms aimed at Earth come in three stages, not all of which occur in any given storm.
扑向地球的太阳风暴分三个阶段，但并不是所有的阶段都发生在特定的风暴中。
It is at the boundaries between plates that most of Earth's volcanism and earthquake activities occur.
地球上大部分的火山活动和地震活动发生在板块之间的边界处。
They occur primarily in regions of recent volcanic activity as hot, dry rock; natural hot water; or natural steam.
地热能主要以干热的岩石、自然热水或自然蒸汽的形式出现在近期火山活动的区域。
To argue for a cause-and-effect relationship, scientists must attempt to explain why and how a connection could occur.
想要证明因果关系，科学家们必须尽量解释这种联系可能出现的原因和方式。
Finally, the good reader has at his command several special skills which he can apply to reading problems as they occur.
最后，优秀的读者掌握了几种特殊的技巧，当出现阅读问题时，他可以运用这些技巧。
Data has since revealed that all mass strandings around Australia occur on gently sloping sandy beaches, some with inclines of less than 0.5%.
此后的数据显示，澳大利亚周围所有的大规模搁浅都发生在平缓倾斜的沙质海滩上，有些海滩的倾斜度小于0.5%。
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。
Friendships are not made in a day, and the computer would be more acceptable as a friend if it imitated the gradual changes that occur when one person is getting to know another.
友谊不是一天就能建立起来的，如果电脑能模仿一个人逐渐了解另一个人时发生的变化，那么作为朋友它会更容易被接受。
Friendships are not made in a day, and the computer would be more acceptable as a friend if it simulated the gradual changes that occur when one person is getting to know another.
友谊不是一天建立起来的，如果电脑能模拟出一个人认识另一个人的过程中所发生的渐进变化，那么它将更容易被人们接受为朋友。
Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive areas such as attention and memory.
研究人员已经证实，当人们动脑筋时，大脑中会发生生化变化，使其在注意力和记忆等认知区域更有效地发挥作用。
This technique is particularly successful where problems occur as the result of repetitive movements.
这项技术的成功之处在于能解决重复运动引起的问题。
Gut feelings can occur without a person being consciously aware of them.
直觉会在一个人没有意识到的情况下产生。
It didn't occur to her to ask for help.
她没想到请别人帮忙。
If any bright thoughts occur to you pass them straight to me. Have you got any?
如果你想到某个好主意就直接告诉我。你有什么好主意吗？
Furthermore, the legal system and the events which occur within it are primary subjects for journalists.
此外，法律制度和与其密切相关的事件是新闻记者报道的重要主题。
Not once did it occur to Michael that he could one day become a top student in his class.
迈克尔一次也没有想过有一天他会成为班里的尖子生。
That such deep events do occur has been accepted only since 1927 when the seismologist Kiyoo Wadati convincingly demonstrated their existence.
直到1927年地震学家KiyooWadati证明了这种深度地震的存在，人们才承认这种现象确实存在。
这样的奇迹是怎样发生的呢？
奇迹再小也能有。
奇迹真的发生了！
How wonderfully these sort of things occur!
这些事真是太巧合了！
Entrepreneurship can occur in a large company.
创业也能发源于大公司。
Let difficulties occur but not the loss of courage.
纵使困难重重，也不丧失勇气。
Instead, what needs to occur is simple generosity.
相反，其实需要的就是简单的慷慨而已。
In that moment, it is natural for forgiveness to occur.
在那一刻，原谅会自然而然地到来。
This makes it easy for transactions to occur between businesses.
这使企业之间的业务交易变得更加方便。
If any of the following errors occur, you can resolve them easily yourself.
如果出现下面任何一个错误，您可以自己轻松地进行处理。
Miracles sometimes occur, but one has to work terribly for them. (C.Weizmann).
奇迹有时候是会发生的，但是你得为之拼命的努力。
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