产生这种循环的因素有两个：食用植物和食肉动物。
Two factors appear to be generating the cycle: food plants and predators.
一品脱半的啤酒就可以产生这种效果，对男性来说，这种效果可以持续24小时。
A pint and a half of beer can produce the effect and in men it may last 24 hours.
你会对水痘病毒产生这种初始应答，这种初始应答可能过于缓慢，无法预防水痘。
You would have this initial response for chickenpox, and this initial response might be too slow to prevent you from getting chickenpox.
产生这种效果的原因还是个谜。
一个公式怎么能产生这种破坏性冲击？
他们还设计了产生这种变换的数学理论。
They laid out the mathematical theory for making that transformation.
现在经济学家们很自然会产生这种想法。
但是我们不会让基亚尼推动产生这种结果。
实际上，产生这种蛋白质的基因被压制了。
你认为产生这种关系的原因是什么？
它能够产生这种影响。
产生这种矛盾的原因很难理解。
当生产者产生这种消息时，客户机就会收到它们。
When such messages are generated by a producer, the client receives them.
两种药物相互作用产生这种结局的机制尚不清楚。
Exactly how the two drugs interact to produce this result is not yet clear.
以我的理解产生这种想法的原因大概是害怕失败。
The reason as I can understand is probably "fear of failure".
你知道，每当我翻阅时尚杂志的时候都会产生这种情绪。
You know, this happens every time I look at fashion magazines.
然而，目前的研究者没有发现伐伦克林产生这种副作用的迹象。
Yet the researchers for the current study found no sign of varenicline producing such adverse effects.
当然小说的作者是不愿意让别人问她是从哪里产生这种想法的。
No wonder authors say they hate being asked where they get their ideas.
“我们还确定不了产生这种现象的任何特殊原因。”奥尔森说。
“We’ve not been able to determine any specific reasons for why that began to happen, ” Olsen said.
小队通过基因技术用其他细胞产生这种分子，也可以达到同样的效果。
The team also used genetic techniques to produce the molecule in another type of cell and showed that version had the same effect.
布朗没有提卡梅伦的名字，但他经常会让人们产生这种联想。
Mr Brown did not name Mr Cameron, but regularly makes the same allegation.
结果显示，母亲的工作时长并没有对产生这种不良行为产生影响。
Mothers' work hours showed modest to no effect on bullying behavior.
统计资料表明，其他数以万计的父母也很害怕在某天产生这种感受。
Statistics mean that tens of thousands of other parents out there fear one day knowing those feelings as well.
产生这种观念的原因是多种多样的，但它们都有一个共同的最根本的起因。
The reasons for this bias arevaried, but they have a common underlying cause.
流感病毒尤其容易产生这种重组，一些流行病就是因为这种基因混合所产生的。
Flu viruses are especially prone to this and some pandemics have emerged because of this genetic mixing.
有的人常在暑假伊始因为一下子从忙得不可开交到无事可做从而产生这种感觉。
For others it's the winding down of summer when things go from hectic to not a whole lot going on.
它将避免产生更多不愉快的情况，我猜测也许曾经已经让你产生这种不愉快的情况。
This will avoid making it an even more unpleasant a situation that already is for you, I imagine.
之所以会产生这种需求，是因为大多数计费程序包在设计时都没有考虑到电子商务。
The need arises because most accounting packages were not designed with e-commerce in mind.
之所以会产生这种需求，是因为大多数计费程序包在设计时都没有考虑到电子商务。
The need arises because most accounting packages were not designed with e-commerce in mind.
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