According to some scientists, this happens for two reasons.
根据一些科学家的说法，这种情况的发生有两个原因。
When this happens, the parent birds usually won't care, other than to be a little more careful than normal.
当这种情况发生时，成鸟通常不会在意，只是会比平时更加小心一点。
If this happens, you could point out that screen dance offers other ways for dancers to connect to their audience.
如果这种情况发生，你可以指出屏幕舞还为舞者提供了与观众产生联系的其他方式。
If this happens it will change the face of religious broadcasting.
如果此事发生，它将改变宗教广播的面貌。
This happens whether the children are in two-parent or one-parent families.
这种情况无论在双亲家庭还是单亲家庭的孩子身上都会发生。
This happens a lot, especially when we eat out.
这种情况经常发生，尤其是当我们在外面吃饭的时候。
This happens when a plant gets attacked by insects.
植物被昆虫攻击时就会发生这种情况。
This happens to such a high degree in some children that they appear to be demonstrating talent in particular areas.
这种情况在某些孩子身上会特别明显，以至于他们会在某些特殊的领域显示出异常的天赋。
"This happens a lot," he says.
他表示：“这种情况经常发生。”
And this happens occasionally.
而这类事情时常发生。
When this happens you might lash out.
哇，哇，哇，当这一切发生的时候，你可能会大肆宣泄。
在意大利这倒是很正常。
This happens only for 16bpp video modes.
只有在16bpp模式才有这个问题。
This happens in regular conversations as well.
日常对话中这种情况也常发生。
When this happens, a number of problems emerge.
当这一切发生时，会出现很多问题。
This happens when an input is not filled in.
当没有填写输入框时就会出现该异常。
Let's see what ZFS reports when this happens.
让我们来看一下出现故障时的ZFS报告。
If this happens, your system will not restart.
如果出现此问题，您的系统将不会重新启动。
However, it's not clear if this happens inpeople.
但是，这是否可以发生在人的身上还不是很清楚。
Actually, this happens when you're in experiments.
实际上，实验里会发生这样的事情。
Once this happens, blood appears in the vomit and faeces.
一旦出现此种症状，呕吐物和粪便中就会带血。
Once this happens the coral is deprived of energy and dies.
这种情况一旦发生，珊瑚就会失去能量，进而死亡。
This happens both in the workplace and in day-to-day life.
这种现象在工作场所和日常生活中都会发生。
When this happens to the heart it's called cardiac ischemia.
而发生在心脏，就叫心脏缺血。
And when this happens, the malaria burden falls dramatically.
到那时，疟疾负担会大大减轻。
As this happens, regions self-organize and spread, becoming waves.
在这个过程中，区域自行组织并展开，成为波浪形。
When this happens, secondary logs will be allocated dynamically.
当发生这种情形时，需要动态分配二级日志。
When this happens, the next contiguous chunk of memory is overwritten.
发生缓冲区溢位时，会覆写下一个相邻的记忆体块。
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