首先，让我们明确下你在这里想要阻止发生什么事情。
First, let's be clear about what you're trying to prevent here.
这位高级专员说，这对阻止发生另一次人道危机是至关重要的。
The High Commissioner says it is crucial to head off another humanitarian crisis.
我们永远都不能阻止海滩被侵蚀，我们只能暂缓其发生。
We'll never be able to stop beach erosion, we can only stave it off.
我们知道这一点，我们当中有些人甚至试图阻止这一切的发生。
因为，要阻止事故的发生，你必须要认真考虑盒子的内部。
Because to prevent future accidents, you might have to think inside the box.
首先，我必须阻止带来不利影响的事情发生。
改变在发生——没有什么能够阻止或减缓它的速度。
Change happens-there's nothing you can do to stop it or slow it down.
刺激方案是否会阻止衰退的发生，或者仅仅是延缓，这还没有答案。
Whether the stimulus will prevent a recession or merely delay it is anyone’s guess.
“他们希望(这些事情不发生)，但是却没有办法阻止”李说。
"They expected it, but just had no way to stop it," Li said.
而宇航服恰恰使人体维持在恒压状态下，阻止了上述现象的发生。
A space suit stops this happening by keeping the body under constant pressure.
它们只是在危急时刻，阻止一个银行业危机的发生。
They merely were there in a time of emergency to prevent hopefully a banking crisis.
谢谢议员先生，我们指望你能阻止它发生！
接下来，兹尔罗斯博士想要知道是否能阻止其发生。
我还半想着上帝——或者我的父母，来阻止这一刻的发生。
I had half-expected God — or my parents — to keep this moment from happening.
我没有做任何措施来阻止这件事的发生：没有安全或是预防措施。
I have done nothing to prevent this outcome: no security, no precautions.
而美联储必须竭尽全力阻止它发生。
真正的挑战是不要阻止那些发生在你身边的每一件事。
但是能够做些什么来阻止这种情况发生呢？
或者更准确的说，它开始发生，但在进行中被阻止了。
Or, rather, it started to happen but was stopped in its tracks.
我们不是到那里当目击证人，而是阻止犯罪发生”，他说。
We are not there to witness but to stop crimes being committed," he says.
已有的东西阻止任何新的事情发生。
据说在卡布尔发生的其他的大规模的攻击也遭到了阻止。
It is said that other big attacks have been foiled in Kabul too.
这样就足以阻止挑战者号的发射，并避免随之发生的举国悲痛的悲剧了吗？
Would this have been enough to prevent the Challenger's launch, and subsequent national tragedy?
怎样才能阻止这一切发生呢？
因此，后一个事件本来可以发挥影响力，阻止该效果的发生，但事实上并未发挥出来那种影响力。
So, the event could have provided a force against the effect, but it does not.
我们必须阻止这样的事情在这里发生。
然而，灾难发出的威胁并不是每次都能阻止灾难的发生。
Yet the threat of a disaster does not always stop it from happening.
我们必须采取措施阻止这类悲剧再次发生。
We must take steps to prevent this tragedy from happening again.
我们必须采取措施阻止这类悲剧再次发生。
We must take steps to prevent this tragedy from happening again.
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