When someone is drowning, it's often silent and happens very quickly. But it can be prevented.

当有人溺水时，通常是无声的，而且发生得很快。但这是可以预防的。

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He has recently made a significant discovery—loneliness is a serious social problem that can contribute to depression and even crimes, but it can be prevented in a clever way.

他最近有了一项重大发现——孤独是一个严重的社会问题，它会导致抑郁甚至犯罪，但可以用一种聪明的方法加以阻止。

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Yet, in cases of amino acid deficiency, it can be prevented.

如果是因为缺乏氨基酸，还能预防。

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But most important is finding the cause of the disease so it can be prevented or cured.

VOA: standard.2010.08.09

Senior manager Tshepo Ramodibe said the group hopes to use the upcoming football World Cup, being played for the first time on African soil, to broaden awareness of the disease and the way it can be prevented and treated.

VOA: standard.2010.04.23

So it can be prevented, but it really does require vigilance, training and deployment of forces.

NPR: Behind the Workings of Suicide Bombers

And then figure out what happened so it can be prevented in the future.

FORBES: How to Be a More Reliable Professional

We must not allow children to die from this disease if it can be prevented.

BBC: Meningitis B vaccine gets European licence