My mother was so touched by her gesture that she decided to go back to the store and give the cashier a five-dollar bill to keep on hand in case the same happened to someone else if they didn't have enough money for all of their groceries.

我母亲被她的举动感动了，她决定回到店里，给收银员一张五美元的钞票，让他放在手边，以防别人在没有足够的钱支付所购买的东西时发生同样的情况。

youdao

A five-dollar bill changes into five one-dollar bills.

一张5美元的钞票破成5张一美元的钞票。

《新英汉大辞典》

This is a five-dollar bill.

这是一张五美元的钞票。

youdao

Another of America's greatest presidents, Abraham Lincoln, is on the five-dollar bill.

VOA: special.2010.11.12

For their personal entertainment budgets, they both keep any five-dollar bill that passes through their hands.

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Three months later, a thank-you letter had come from Jarvis with a five-dollar bill enclosed.

NPR: Excerpt: 'The Member of the Wedding'

The more that a payment card becomes like a five-dollar bill, the harder it is for most people to see it as something special.

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