So, indeed, we are talking about a lot of void and a tiny little bit of extremely dense being.

事实上，更多的是许多真空,只有极小部分的高密度的物质。

麻省理工公开课 - 固态化学导论课程节选

This is a game in which there are two firms who are competing in the same market, and we'll give a bit more detail in a second.

它讲的是在同一个市场中,只有两家公司互相竞争,稍后我会给出更多的细节

耶鲁公开课 - 博弈论课程节选

Now, the other thing to keep in mind is that for any cell there's not just one receptor on the cell, there are thousands, or hundreds of thousands of receptors.

我们要记住的另一点是,在细胞表面,不仅仅只有一个受体,而是有成千上万甚至更多的受体分子

耶鲁公开课 - 生物医学工程探索课程节选

As an aside, if you ever just have one line of code that you want to execute, one puzzle piece in Scratch terminology, ; you actually don't need the curly braces; you only need the curly braces if you have two or more lines of code that you want to execute if that condition is true.

此外，如果你只有一行代码,需要执行，在Scratch，术语中叫做,一句代码，你就不需要使用花括号了;,如果那个条件成立，你有两行或更多行的代码时需要执行时,你就需要花括号。

哈佛公开课 - 计算机科学课程节选