The rules would require the investment houses to register with the Securities and Exchange Commission if their assets exceed a yet to be determined size.

VOA: standard.2009.03.26

If you went to a store to buy something with paper money then the person at the ? would it be a cash register?

如果你用纸币去一家商店,买些东西，那么收银员,等等，那时会是个收银员吗？

耶鲁公开课 - 金融市场课程节选