当一座加油站被烧毁，你不仅想知道是谁扔下了烟头，你还想了解所有易燃气体的泄露原因。

When a petrol station burns down, you don't just want to know who dropped the cigarette; you want to know why all the combustible fumes escaped.

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你将需要了解所有的细节。

You'll need to be acquainted with all the details.

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了解所有引起ADHD的原因是很困难的。

Understanding all of the factors that contribute to ADHD is difficult.

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So, it's important to get a little bit of a sense of what all these different kinds of lights do.

对所有这些不同种类的光波,有个大致的了解是非常重要的。

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It's not the idea about understanding everything, but just so you get the general idea.

不是要你弄懂所有东西，但起码你可以了解大意。

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They're required, every year, to go into the business, into one part of the business for a whole day and learn everything there is to know about that.

他们每年必须抽出一天仔细研究公司情况，公司某一方面的情况,了解所有相关信息。

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