We call them consols because, in the early 1700s, the British Government issued what they called consols or consolidated debt of the British Crown that paid a certain amount of pound sterling every six months forever.

我们称之为公债是因为早在十八世纪初,英国政府规定他们称之为英国皇家,统合公债或者联合公债,要求永久性地,每六个月支付一定数量的英镑

耶鲁公开课 - 金融市场课程节选

There are a couple of copies of this on reserve in the music library and you can go over there inside of Sterling memorial Library and do the listening there if you want, but one way or another you've got to get a hold of this.

斯特林纪念图书馆里有一些拷贝件,你可以在心血来潮时,去图书馆里做音乐欣赏,总之你一定得去听

耶鲁公开课 - 聆听音乐课程节选