不要说“童话故事里有仙女”，因为我们都知道，很少有童话故事里真的有这些魔法小生物。

Don't anyone say "a story with a fairy in it" because we all know that very few fairy tales actually have those tiny magical creatures in them.

youdao

你要知道他使用了什么颜料，换句话说，他用了什么原料来制造不同颜色的油漆，因为油漆中使用的原料和结合剂都随着时间的推移而改变。

You'd have to know what pigments he used, in other words, what ingredients he used to make different colors of paint, because the ingredients used in paints and binding agents have changed over time.

youdao

我们都知道，因为氧气中的硫和氯具有不同的平均价电子能，它们的电子亲和力也不同。

We know that because the sulfur and the chlorine in the oxygen have different average valence electron energies, they'll have different electron affinities.

youdao

We have to account for that in some way because we know that they don't have identical average valence electron energies.

我们需要从一些方面来解释一下,因为我们都知道,他们没有相同的,平均价电子能。

麻省理工公开课 - 固态化学导论课程节选

You can go ahead and use that equation, or you could figure it out every time, because if you know the total number of nodes, and you know the angular node number, then you know how many nodes you're going to have left.

你们可以直接用这个方程，或者每次都自己算出来，因为如果你们知道了总的节点数，又知道角向节点数，就知道剩下的节点数是多少。

麻省理工公开课 - 化学原理课程节选

First, that everybody knows realities, people believe that because we all immersed in it, and that already defeats models that you might have.

第一条便是，每个人都知道现实，人们相信现实，因为我们都存在于现实中，现实可能摧毁了你曾经有过的世界观。

麻省理工公开课 - 电影哲学课程节选