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 van Inwagen concludes, if you have an object, and you take it apart, and then put them all back together again, you don't have the very same object that you started out with.

所以范·，因瓦根总结道，如果你将拥有的物体拆开，再把所有的零件重组，你手上的并非,原来的那个物体。

耶鲁公开课 - 死亡课程节选

if you really have some trouble with DVD then Ok, put it in and if I'm not back start it anyhow and I'll try very hard to be here in the meantime,could you make out the card

如果有什么问题的话,如果我没及时赶过来的话，下次把它先放一下,无论如何把它放了，我下次也尽量赶过来,啊，你看一下这个卡

麻省理工公开课 - 电影哲学课程节选

It expands. You change your constraints on your system, you heat it up some more, then you take the heat source away, and you put it back in contact with the atmosphere. And you cool it a little bit, change the constraints, cool it a little bit more, and heat, and you've got a closed cycle engine.

让它与大气接触冷却,改变约束，使它继续冷却，然后又再次加热,这就是循环热机，我们以前也研究过，更复杂的机器。

麻省理工公开课 - 热力学与动力学课程节选

I get to the end of the loop, and I actually do a little bit of wasted motion there. And the little bit of wasted motion is, I take the value at i, store it away temporarily, take the value where min index is pointing to, put it back in there, and then swap it around.

我走到了循环的末尾，事实上我做了多余的动作了,有点多余的是我把i的值，临时保存起来了，看看MinIndex指向的值，放回到哪里，然后再交换。

麻省理工公开课 - 计算机科学及编程导论课程节选

If I then put it back into its original condition, lower the heat say, temperature back to body temperature and reduce the pH down to seven again, the molecules will re-nature.

假如我把烧杯的温度恢复到初始状态,降低温度,温度降低到体温,将pH值降低到七,这些分子会复性

耶鲁公开课 - 生物医学工程探索课程节选