So it's generally called distribution code and whereas for the previous problems that you pretty much started from scratch, blank files you opened up nano and there was nothing there unless you put it there.

它一般被称作分布码，然而,对于之前几乎要从头做起的问题,在空白文件中什么都没有,除非你在里面写入些东西。

哈佛公开课 - 计算机科学课程节选

So first thing we should do is scratch our heads and see what's going on here. Alright, let's look at it. What's happening here?

所以我们要做的第一件事,就是抓抓脑袋看看发生了什么,好了，让我们来看看，这儿发生了什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Let's actually put this into play with the little sprite known as scratch.

让我们把这个用到那个,我们熟知的小精灵当中。

哈佛公开课 - 计算机科学课程节选

Less than an hour later, the Northern Irishman won the 15km men's scratch race.

BBC: Northern Ireland

Cameron Meyer also added another Australia gold - his third of the Games - in the men's scratch race.

BBC: Commonwealth Games 2010: Houvenaghel wins silver medal

Cameron Meyer added a third gold medal to his collection, winning the men's scratch ahead of compatriot Michael Freiberg.

BBC: Commonwealth Games 2010: Aussies rule in velodrome