When someone borrows money from me, I usually ask for an IOU.

别人向我借钱时一般都会请求立字据。

youdao

When you borrowed the money to buy your home, you signed a promissory note - an IOU.

当你借来的钱去买你的家，你签本票安借据。

youdao

A bond, of course, is just an IOU, a promise to pay back money with interest by certain dates.

债券，当然，这只是一个借据，承诺到期归还并支付利息的纸条。

youdao

I may have an "IOU" From someone or I may own a bond from someone that promises to pay me something in a year or two years.

也许我握有一份欠条,或是一份合约,某人承诺,在一年或者两年内支付我一些钱

耶鲁公开课 - 金融市场课程节选

When you sell your strip mall or your business, you take an IOU from the buyer for some of the purchase price.

FORBES: Magazine Article

The bank takes that contract , creates an account and deposits that IOU into an account.

FORBES: Reviving The Gold Standard Would Never Work

An exchange-traded note is an unsecured bank IOU with returns pegged to some index.

FORBES: Magazine Article