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。
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。
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。
This occurs when business leaders implement IT initiatives with little consideration of how those changes will impact the end user.
当业务主管在实施IT计划的过程中很少考虑这些更改将如何影响最终用户时，就会出现这种情况。
The third type of feedback is disconfirmation, which occurs when others fail to respond to your notion of self by responding neutrally.
第三种类型的反馈是不确定，当其他人没有通过中立的答复来回应你的自我认知时，就会发生这种情况。
Basically, the phenomenon of Standing Waves occurs when sound waves of the same frequency reflect off the walls and meet from opposite directions.
基本上，当相同频率的声波从墙壁上反射并从相反方向相遇，就会出现驻波现象。
The best form of advertising is probably word-of-mouth advertising which occurs when people tell their friends about the benefits of products or services that they have purchased.
最好的广告形式可能是口口相传的广告，当人们将所购买的产品或服务的好处告诉他们的朋友时，这种广告就出现了。
The best form of advertising is probably word of mouth advertising which occurs when people tell their friends about the benefits of products or services that they have purchased.
最好的广告形式可能是口碑营销。当人们将所购买的产品或服务的好处告诉他们的朋友时，口碑营销就出现了。
The rare disorder, in which one side of the brain grows substantially larger than the other, occurs when neurons in the abnormal hemisphere undergo too many cell divisions before they mature.
当异常半球中的神经元在成熟之前经历过多的细胞分裂时，就会发生这种罕见的疾病，即大脑一侧长得比另一侧大得多。
The cry occurs when air is brought into contact with the baby's larynx.
当空气接触到婴儿的喉咙时，哭声就会响起。
Confirmation occurs when others treat you in a manner consistent with who you believe you are.
当别人对你的态度和你对自己的看法一致时，你就得到了证实。
It is there that a kind of alchemy occurs when we breathe up and out the passing whiffs of our chewed food.
当我们吸入和呼出咀嚼食物产生的气体时，这个部位就会发生一些神秘的变化。
Good writing most often occurs when you are in hot pursuit of an idea rather than in a nervous search for errors.
优秀的文章通常诞生在你热切寻找一个灵感的时候，而不是在你紧张地寻找错误的时候。
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。
On the other hand, rejection occurs when others treat you in a manner that in inconsistent with your self-definition.
另一方面，当别人对待你的方式与你的自我定义不一致时，你就会被拒绝。
One example of this occurs when an Anglo- Saxon writer refers to a seventh-century English princess as "a wonderful man".
关于这种的例子有：一位盎格鲁-撒克逊作家将一位七世纪的英国公主称为“一个了不起的男人“。
Tropism refers to the tropism that occurs when an organism is exposed to a stimulus.
向触性是指生物体接触到刺激时发生向性运动。
A positive Brudzinski's sign occurs when flexion of the neck causes involuntary flexion of the knee and hip.
当脖子的弯曲导致膝盖和臀部的不自主弯曲时，这是布鲁金斯氏征的阳性标志。
The second action occurs when users join a meeting.
第二个操作发生在用户加入会议时。
Recovery occurs when investor confidence returns.
而当投资者信心恢复时经济也就复苏了。
This “groupthink” occurs when people copy one another.
这种“群体思维”出现在人们有从众行为的时候。
What happens if an error occurs when we run our client?
如果运行客户机时出现错误怎么办？
The same process occurs when we burn wood in a fireplace.
这个过程和我们在火炉中烧材是一样的。
Intrinsic reinforcement occurs when the act is reinforcing.
当行动加强时内在的强化就出现了。
A lunar eclipse occurs when the Earth's shadow falls on the moon.
月食的发生，是由于地球的影子落在月球上。
Star one says death occurs when personality stops functioning.
星号一说，死亡在人格功能停止时发生。
B: it occurs when a component reaches its limit for deformation.
B：当一个部件达到了变形的极限时，就会发生断裂。
Uncertainty occurs when the probability distribution is unknown.
当概率分布未知时，就存在不确定性。
The problem occurs when acute stressors pile up and stick around.
问题出在当急性压力堆积并留了下来。
The problem occurs when acute stressors pile up and stick around.
问题出在当急性压力堆积并留了下来。
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