我害怕我会太过于看重我的外表而又在它消逝的时候才想起来抓住它。

I'm afraid that I'll get too attached to my appearance, only to grasp when it fades.

youdao

后来，他发现了一个太阳黑子群，它存在时间很长，从太阳的西边消失，又在东边出现，最后又回到原来的位置。

Afterwards he found a sunspot group which lived long enough to disappear from view on the western limb of the sun, to reappear on its eastern limb, and finally to regain its old position.

youdao

我们为什么已经开始接受电子音乐，然后呢？为什么我们过去反对它？哪种技术强化型音乐又在未来等着我们？

Why have we come to accept electronic music, then? Why did we oppose it and what sort of technologically enhanced music awaits us in the future?

youdao

It's difficult, philosophy and social thought, but it's not difficult because of the element of surprise.

这很难，哲学和社会思想，但它又并不难在惊讶这个成分。

耶鲁公开课 - 文学理论导论课程节选

And then he goes back to hell and then back up to heaven -goes back and forth between these two rhythmically very different concepts.

然后它回到了地狱,接着又升到了天堂,在这两种节奏非常不同的概念之间,来回往复

耶鲁公开课 - 聆听音乐课程节选

And an important thing to remember when we talk about resonance hybrids is that the structure it's not 1/2 the time this structure, and 1/2 of the time this structure, it's actually some combination or some average between the two structures.

而当我们讨论共振杂化的时候,有一件重要的事情需要牢记,那就是这种结构并不是,一半时间处于这种结构的状态，而另外一半时间又变成了这种结构的状态，它实际上是两种结构在,一定程度上的组合或者平均。

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