Don't use too much of it—it cost a lot of money.

这东西很贵，不要用得太多。

《牛津词典》

They cost more to use at home.

它们在家里使用成本更高。

youdao

Companies can also optimize their energy use and cut down on the cost of electricity.

企业还可以优化能源使用，降低用电成本。

youdao

Judge Wright says the cost of gathering lots of scientific evidence can limit the use in real-life trials.

VOA: special.2009.08.31

I think that if Ford and other car companies didn't use cost-benefit analysis, they'd eventually go out of business because they wouldn't be able to be profitable and millions of people wouldn't be able to use their cars to get to jobs, to put food on the table, to feed their children.

我觉得要是福特和其他汽车公司,不使用成本效益分析的话，他们最后就会倒闭,因为他们无法盈利,这样就会有数百万人无法开车上班，没法赚钱，养不起小孩。

耶鲁公开课 - 公正课程节选

"We say,find more American energy and use less--energy that is as clean as possible, as reliable as possible, and at as low a cost as possible.

VOA: standard.2009.04.25

The gallium-arsenide cells use low-cost lenses to concentrate sunlight on tiny cells.

FORBES: Semprius Bets on Super-Small Solar Cells

While the past approach was to use low-cost labor in China, the new factories, many of which are managed by outsiders, use increasing levels of automation, which will change the employment patterns in China.

FORBES: Characteristics Of The New China

The top five e-tail sites use the cost-saving code.

FORBES: Dell Wants Sun To Set On Costs