如果这是真的，那么为什么像蛇、蜥蜴、乌龟和鳄鱼这样的冷血动物能在寒冷的冬天和炎热的夏天存活下来呢？

If true, though, why did cold-blooded animals such as snakes, lizards, turtles, and crocodiles survive the freezing winters and torrid summers?

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当地的人们这样形容神农架的特殊气候：“山脚下是夏天，山顶是春天，山脚下是秋天，山顶被冰雪覆盖。”

"When the bottom of the mountain is summer, the top is spring and while the foothill is autumn, the top is covered with ice," local people say of the special climate of Shennongjia.

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去年夏天，我和妻子存了一年的钱，这样我们就能去加勒比的几个海岛进行一次浪漫之旅。

Last summer my wife and I had saved for a year to be able to take a romantic cruise to several Caribbean islands.

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We're still close enough to the summer that the air is not just filling us up with extra static electricity, so it's a little more challenging here.

我们现在离夏天更近了,这样空气中不总是,充满额外的静电，所以这时做实验,会有一些挑战性。

麻省理工公开课 - 化学原理课程节选

As you can tell from the cameras, the course is in fact filmed for reasons of distance education and your benefit for review; we've been working on this past summer what we dubbed cs50.tv which is our own delivery mechanism for these videos.

你们从大屏幕上可以看出来,该课程实际上是为远程教育拍摄的,你们能够在评论的过程中获益良多,今年夏天我们一直忙于cs50。tv网站的事,这样，拍摄完的视频就可以上传到这个网站。

哈佛公开课 - 计算机科学课程节选