销售：一般来讲，任何人只要是公司的收入来源，他都会安全，所以销售人员——特别是在抗衰退行业——几乎不用担心。

Sales: As a general rule, anyone who is a source of income for a company will be safe, so salespeople - especially in recession-proof industries - have little to worry about.

youdao

The housing sector in the United States, you might say, is completely different from municipal bond insurers; but when the housing sector starts going down, people start defaulting on their mortgages.

你可能会说,美国房地产,是与市政债券保险公司完全不同,但是当房地产行业开始衰退,人们就开始对抵押贷款违约

耶鲁公开课 - 金融市场课程节选