They say the program can show the source, placement and size of several strong earthquakes within two minutes.

VOA: special.2009.03.17

long l So let me try this, long l, and then let me do a little Copy Paste here and say a long is actually the size of l. So let me quit that program; recompile.

让我们来试一下，然后我在这里复制粘贴一下,这里long的大小实际上是l的大小，所以让我退出,那个程序，重新编译。

哈佛公开课 - 计算机科学课程节选