Well within the next few weeks we will dive into all sorts of languages but the first one is a little something Scratch called Scratch.

在未来的几个星期,我们将接触各种程序语言,第一个就是。

哈佛公开课 - 计算机科学课程节选

So really, the rule of thumb if you think back to Scratch is -- that any time you write a statement -- -- something that does something in one line of code -- you generally need the semicolon there.

实际上，根据经验，你们回忆一下在Scratch中,任何时候你们写一条语句-,处理一些操作的一行代码-,你们通常需要在那里加个分号。

哈佛公开课 - 计算机科学课程节选

So when scratch blocked terms, I'd have a four loop or like a forever loop or something and then another one inside.

当scratch阻塞了，我用一个for循环,或者一个永久循环之类的东西,然后另一个在里面。

哈佛公开课 - 计算机科学课程节选

Another one might be "wait one second" which is another building block or puzzle piece and scratch.

另一条语句可能是“wait，one，second“,这条语句组成块或者片。

哈佛公开课 - 计算机科学课程节选

And in Scratch did you probably see the key word "and" on one of the blocks.

在Scratch中，你们大概看到那个关键字,“and“在其中一个程序块中。

哈佛公开课 - 计算机科学课程节选

Here, print F, recalls a statement and just like in scratch, statements were these one-liners.

这里，printf，召回了一个语句,像在scratch中，语句是这些单行方式的。

哈佛公开课 - 计算机科学课程节选

> So this was a Scratch project submitted by one of last year's students.

>，这是由去年一个学生完成的,一个Scratch项目。

哈佛公开课 - 计算机科学课程节选

> So this tune made by one of our former students; but it doesn't have to be something written in Scratch, it doesn't have to be a game or animation it can simply be an incredibly, wonderfully way to spend time.

这段是由以前的学生制作的;,不一定非要用Scratch编写，也不一定必须是个游戏或动画,它只不过是用来打发时间的，一个好办法。

哈佛公开课 - 计算机科学课程节选

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