比如，你知道现在这么多学生背着的背包最初是为军队设计的吗？

Did you know, for example, that the backpacks that so many students carry today were originally designed for the military?

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我们现在所经历的事将有助于发展我们的品质，比如独立和自信。

What we are going through now will help develop our characters, such as independence and confidence.

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现在，已经发现地球上有完全黑暗的地方，比如海洋下方数英里的洞穴。

Now, places have been found on earth that are in total blackness, such as caves several miles beneath the ocean.

youdao

And for Americans, all our democratic experience and do I have to put a tie on for this event or not?

美国人也如此,我们都参与民主政治,知道在什么场合需要系领带,比如现在

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If you look at cancer, for example which is down here, only 3.7% of deaths, much smaller then the number today.

比如癌症,你可以在这下面看到,只占了3.7%,比现在少多了

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And then maybe I raise the temperature to whatever, room temperature, maybe 20 degrees hotter than room temperature. And I again say OK, now how much heat do I need to raise this thing's temperature by 1 degree?

我可能把温度升到，比如室温,或者比室温高20度之类,然后我再说，好,现在要把这个东西的温度,升高一度需要多少热量？

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