A burglary occurs every three minutes in London.
入室盗窃案在伦敦每3分钟就发生一起。
At least one supernova occurs per decade in our galaxy.
每十年至少有一颗超新星在我们的银河系中出现。
Conception occurs when a single sperm fuses with an egg.
当一个精子和一个卵子结合时受孕就发生了。
If a crime occurs then there is, ipso facto, a guilty party.
如果有罪行发生，那么根据事实，这是有罪的一方。
It occurs in elderly men, apparently as part of the aging process.
作为衰老进程的一部分，它明显发生在老年男性身上。
In the Chinese calendar, the Spring Equinox always occurs in the second month.
在中国历法中，春分总是出现在二月份。
It often occurs among commuters.
它经常发生在通勤者中。
What can you do if an eye injury occurs?
如果发生眼外伤，你会怎么办？
When this occurs, the prey population can rebound.
当这种情况发生时，猎物的数量就会反弹。
This recognition occurs around their second birthday.
这种认识发生在他们两岁生日前后。
At about 460 miles one earthquake occurs only every few years.
在大约460英里的地方，每隔几年就会发生一次地震。
It occurs because blood flow gets reduced in that blood vessel.
它的发生是因为血管中的血流量减少了。
The same fluctuation back and forth occurs in areas other than intelligence.
同样的上下波动也发生在智力以外的领域。
As this occurs, we should see the impact of these events on prices start to reverse.
当这种情况发生时，我们应该会看到这些事件对价格的影响开始逆转。
In a new study, researchers demonstrated for the first time how this effect occurs in the brain.
在一项新的研究中，研究人员首次证明了这种效应是如何在大脑中出现的。
While this can happen, it is often a more gradual process that occurs over different experiences.
虽然这可能发生，但通常是一个更渐进的过程，发生在不同的经历中。
But in a new study, researchers demonstrated for the first time how this effect occurs in the brain.
但在一项新的研究中，研究人员首次证明了这种效应是如何在大脑中出现的。
This occurs at a time when other nations have made significant gains in their own research capabilities.
这种情况发生在其他国家自身科研能力取得重大进展的时候。
The problem occurs because plants need to transfer pollen by wind and insect to fertilization and reproduction.
这个问题的出现是因为植物需要通过风和昆虫来传递花粉以受精和繁殖。
El Nino, Spanish for "the child", occurs when surface ocean waters in the southern Pacific become abnormally warm.
“ElNino（厄尔尼诺）”在西班牙语中是“孩子”的意思，当南太平洋表层海水异常变暖时，会出现厄尔尼诺现象。
An interacting—and complicating—phenomenon is wind-to-water transfer of momentum that occurs when waves are formed.
一种相互作用且复杂的现象是波浪形成时发生的风向水的动量传递。
Another type of fossilization, known as carbonization, occurs when soft tissues are preserved as thin films of carbon.
叫做碳化的另一种石化类型，发生在软组织以碳薄膜形式被保存下来的过程中。
Displacement occurs because the animal's got two conflicting drives—two competing urges, in this case, fear and hunger.
转移行为的发生是因为动物有两种相互冲突的驱动力——两种相互矛盾的冲动，在这种情况下，就是恐惧和饥饿。
An exception occurs occasionally in cases where customers for a particular industrial product may be few and easily identifiable.
偶尔会出现例外情况，即某一特定工业产品的客户可能很少，而且容易识别。
Leaves develop chlorosis; stems are short and slender, and anthocyanin discoloration occurs on stems, petioles, and lower leaf surfaces.
叶片变得萎黄，茎短而纤细，并且在茎、叶柄和叶片下表面会出现花青素变色。
Sugar occurs naturally in fruit.
水果天然含糖分。
Change occurs at a glacial pace.
变化来得极为缓慢。
It never occurs to them to question the doctor's decisions.
他们从来没有想到去怀疑那个医生的决定。
One of the funniest episodes in the book occurs in Chapter 6.
书中最有趣的片段之一在第6章。
When hay fever first occurs it is often mistaken for a summer cold.
花粉病刚发作时，常会被误认为是热伤风。
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