If you're getting these compilation errors, well, -- when you compile, notice there's a number of key help -- the number of helpful tidbits here.

如果你们得到了这些编译错误，当你编译的时候，注意这里有很多关键帮助-,这里很多帮助信息。

哈佛公开课 - 计算机科学课程节选

I've put it in the key-- what's called the bass clef here-- and it's in a major key.

我已经标好了调性,这个叫低音谱号,它采用的是大调

耶鲁公开课 - 聆听音乐课程节选