youdao

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

He says the dollar is "not a good store of value" given the high public debt and uncertain economic outlook in the U.S..

他说，美元不是一个好的保值工具，美国的公债太高，美国的经济前景也很不确定。

youdao

It looked like Elmo, but a little off, the way a dollar-store sandwich cookie sort of tastes like an Oreo.

WSJ: Getting Into a Character

So he is confident that Dollar General will maintain a 5% comparable-store sales gain largely due to its price advantage over Wal-Mart.

FORBES: Discount Retailer Dollar General Taking Away Market Share From No. 1 Wal-Mart