If I type 4 and hit Enter the 4 moves down and the blank space essentially moves up.

如果我键入4并回车，那么4会向下移动,空白区将会上移。

哈佛公开课 - 计算机科学课程节选

So with an integer, an int data type, you can store any number between 0 and 4 billion roughly.

只要有一个整数，一个int型的数据，就能储存任意一个,位于0到40亿之间的一个数。

哈佛公开课 - 计算机科学课程节选

No, instead we have to click other amount at bottom right there, when we have to input 4-0-0 in this screen 4-0-0 after consulting visually the little cheat sheet on the device itself it tells you in a very long chart how much one pass costs so we multiply and type in 4-0-0, we hit enter.

不，然而我们必须点击,右下边的这个，当我们需要在这个屏幕上,输入0,通过咨询那个设备上小说明,它在一个很长的图表上,告诉你，每一站需要多少钱，我们加起来,输入了4-0-0，点击输入。

哈佛公开课 - 计算机科学课程节选

So might have been seen long and that might be correct on some servers, but very, very often the data type called "long" is actually 4 bytes.

你们有可能看到过long，那个在一些服务器上是正确的,但是非常，非常普遍的是，那个叫做“long“的数据类型,只占有4个字节。

哈佛公开课 - 计算机科学课程节选