Because Banks make a significant, and ever expanding, profit off the spread.

因为银行仍从利差中赚取了巨大的，甚至不断扩大的利润。

youdao

The company didn't make as much profit off the new product sales as predicted.

这家公司新产品销售的盈利并没有达到预期。

youdao

The plug-in hybrid and could tide Toyota over until the electric vehicle market becomes big enough to profit off of it.

这款插电式混合动力车能让丰田也赶上潮流，直至电动汽车市场大到足够丰田盈利之日。

youdao

"hard close" would prevent them from letting favored clients illegally profit off late orders.

FORBES: Magazine Article

Meanwhile, European businessmen were downstairs in the hotel lobby, plotting ways to profit off bountiful Libyan petro-dollars.

CNN: Libya seen through Gadhafi's keyhole

Great American takes care of the catalogues, the ordering and fulfillment, and earns a profit off sales.

FORBES: Schoola Pioneers Groupon Fundraising For Schools