You've got to pretty much take that chalk, and make a slurry out of it, put water, and dry it back up, put in a mold, and then you can have the chalk again, but you can't just glue it back together.

你得尽可能地收集它的碎片，把它做成粉浆，加水然后风干，放进模具，然后你就能重新得到这支粉笔，但是你不能简单地把它粘起来。

麻省理工公开课 - 热力学与动力学课程节选

So I need to find out the heats of formation of the iron oxide and the water.

所以我需要找出氧化铁和,水的生成热，如果我这么做了。

麻省理工公开课 - 热力学与动力学课程节选

It blows selection and Bubble Sorts out of the water, but why is that?

它比选择和冒泡排序,更高效，为什么呢？

哈佛公开课 - 计算机科学课程节选

The lipids will form a bi-layer where the water soluble part of the lipid points out of this layer and the oily part points in.

脂质会形成双层膜,水溶性部分朝向膜层外,而脂溶性的部分朝向双层膜内部

耶鲁公开课 - 生物医学工程探索课程节选

It's on a low bridge near the water, solid wood planks, nice and wide, hand railings made out of solid wood, and you can cross the bridge that way.

另外一座桥离水面近，实木板材质的，又结实又宽，扶手,也是实木材做的，通过这座桥也可以过河。

耶鲁公开课 - 心理学导论课程节选

And my guess is that if we did taste tests with all you guys of all the popular bottled waters, very few people could probably pick out Evian from any other water.

我猜如果让你们,喝各种瓶装水让你们去分辨,没有几个人能尝出依云和其它水的区别

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And then they found that they could freeze-dry this preparation of virus, and freeze-drying to lower the temperature, freeze it, then extract out all the water, so you're left with a powder, basically a powdered form of the virus, that could be shipped all over the world, and then reconstituted by adding water to it.

研究者们发现可以冷冻干燥这些病毒制剂,冷冻干燥就是就是降低温度,冷冻病毒,然后提取出所有水份,然后就剩下一些粉末,这主要是粉末状的病毒,这样就能将它运往全世界,并可以通过加水来恢复病毒的活性

耶鲁公开课 - 生物医学工程探索课程节选

And if that's the case, why in the world would--can we justify all that shipping, all the excess energy to taste, to ship water in from France, rather then just buying something local or drinking water out of the tap?

既然如此,为什么还会有世界范围的进出口呢,为什么还要浪费能源,从法国进口呢,而不是买当地的品牌,或是直接喝水龙头里的水呢

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选