No country had to follow these risks, but generally, countries have followed them because they want to be part of the international community and you want to use the standards that were recommended.

没有哪个国家必须遵守这些约定,但基本上,所有国家都会遵守,因为他们想成为国际社会的一份子,而且也希望能够使用里面推荐的准则

耶鲁公开课 - 金融市场课程节选

So we have to--We get the textbook and then with the textbook we recommend getting access to this six-CD set.

我们拿到这教材,并且我推荐大家使用这6张一套的CD

耶鲁公开课 - 聆听音乐课程节选