这对改善个人生活非常重要，然而，据估计，全世界有8.8亿成年人是文盲，也就是说，他们不会阅读或写字。

It's very important for improving the lives of individuals, however, it is estimated that 880 million adults around the world are illiterate, that is, they are unable to read or write.

youdao

通过把一个像素的正负极输入电压，聚合物就能被加工成一种吸收或排除某些电解液的物质，这样它也就会增大或缩小。

By applying a voltage across the electrodes of a pixel, the polymer can be made to absorb or expel some of the electrolyte and thus expand or contract.

youdao

也就是说，您可以将主题集看作是一个集合性的内容对象，使用根主题将集合表示成导航和交叉引用的一个整体。

That is, you can treat the set of topics as a collective content object, using the root topic to represent the collection as a whole for navigation and cross references.

youdao

Our step three is to figure out how many bonding electrons that we need, or excuse me, how many total electrons that we need to fill up our octets, so that's just going to be 4 times 8, which is 32.

我们的第三步是判断,我们需要多少个成键电子，不好意思，是我们总共需要多少个电子,才能填满所有“八隅体“,那么这就应该是四乘上八，也就是三十二。

麻省理工公开课 - 化学原理课程节选

So the influx of ions from the outside of the cell to the inside of And you can think of ion channels as being gated, by gated it means the gate can be closed and no ions are going through, as in this case here.

下面以离子从细胞外部流入内部,你可以把离子通道想象成是有闸门的，也就是说闸门可以关上,这时没有离子能通过，就像这种情况。

麻省理工公开课 - 化学原理课程节选

The virus then can self-assemble, that is, you've made a lot of genetic material, you've made a lot of the structural pieces, there has to be some way that the virus can reassemble, repackage itself into active forms.

于是,病毒可以进行自组装了,也就是说,已经制造出大量的遗传物质,也制造出了大量蛋白质外壳,那么病毒就能通过某些方式,重新装配或者重新组合成活性状态

耶鲁公开课 - 生物医学工程探索课程节选