So we looked at a number of fairly small programs that at the end of the day did very little more than print hello world and the like.

这堂课最后,如果我们只是看几个小程序，根本没啥用,还不如hello，world程序呢。

哈佛公开课 - 计算机科学课程节选

It's sort of the canonical hello world program as computer scientists call this very simple example.

这只是某种“hello，world“程序,即计算机界最简单的程序样例。

哈佛公开课 - 计算机科学课程节选