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

允许你的孩子自由玩耍，这对培养孩子独立思考很重要，因为这促使他们学习玩什么和怎么玩。

Allow your children to play freely, which is important in raising children to think on their own as it forces them to learn what to play with and how.

youdao

马格纳城发现和克里欧佩特拉有关的证据说明不了什么，因为在埃及，你可以在许多地方发现与她相关的物件。

The material associated with her at Taposiris Magna is not meaningful because material associated with her can be found in many places in Egypt.

youdao

So if $200,000, Julie, is too low a figure because it doesn't include the loss of a loved one and the loss of those years of life, what would be what do you think would be a more accurate number?

朱莉，要是20万美金不够,因为没有算丧失亲人,和生命的损失，那你认为什么数目更合适？

耶鲁公开课 - 公正课程节选

For example, if you started here and you did all this and you came back here, the average velocity would be zero, because you start and end at the same value of x, you get something; 0 divided by time will still be 0.

例如,如果你从这里开始运动,经过这个过程又回到这里,平均速度就是0,因为初态和末态的位移相同,你得到了什么呢,0除以时间还是0

耶鲁公开课 - 基础物理课程节选