我们应该明白，伟大的交响乐是用上帝给予全世界的七个简单的音符谱写成的。

We should appreciate that great symphonies were written from only seven simple notes that God gave the entire universe.

youdao

百乐嘉利宝公司管理着七家大型工厂。包括瑞士的两家，通过这两家它可以给好时巧克力，雀巢以及吉百利史威士公司供应工业巧克力。

Barry Callebaut runs seven huge chocolate factories, including two in Switzerland, from which it supplies industrial chocolate to the likes of Hershey, nestle and Cadbury Schweppes.

youdao

大约有三分之一的爵士乐采用蓝调形式，一首歌有12小节，使用“蓝音”，即把第三、五、七个音阶降半音(如c大调的E、G、B)。

About one third of jazz is in blues form with twelve measures4 in a song and USES — blue notes, "the flatted third, fifth, and seventh notes of the musical scale."

youdao

They tend to be just triads whereas in classical music we can have a triad but we can also add a seventh note with one,three,five,seven,nine,eleven, that kind of thing.

流行乐一般只用三和弦，但是古典乐可以用三和弦,也可以在上面加上七音，一，三，五，七，九，十一，诸如此类的。

耶鲁公开课 - 聆听音乐课程节选