保持你的证券成本在最低值；关键是要保证证券回收率。

Keep your portfolio costs to a minimum; this is key to maintaining a profitable rate of return.

youdao

你不能去一个真正的投行然后说，我想买几百股福特汽车的股票，你的证券公司在哪里？

You wouldn't go to a pure investment bank either and say I want to buy a hundred shares of Ford Motor Company,? Where is your stockbroker?

youdao

当其它国家必须用你的货币进行交易，必须储备你的货币以保护其本币价值时，你的证券就可以溢价销售。

When other countries must acquire your currency to trade, and must keep your money in reserve to protect the value of their own, your securities sell at a premium.

youdao

The problem is, if your brokerage firm fails you could lose a lot; you could lose your cash account and your security account.

可问题是,一旦经纪公司破产,你可能损失惨重,赔光你现金账户和证券账户上所有的资金

耶鲁公开课 - 金融市场课程节选

Then I'll take money out of your cash account and I'll put it into these securities.

买的话我就从你的账户中取现,再存入证券账户中

耶鲁公开课 - 金融市场课程节选

When you go to Rome, you can walk and see what's left of their stock market.

如果你去罗马的话,可以去看看当时证券市场的遗迹

耶鲁公开课 - 金融市场课程节选