So, is hydroponics a cheaper way of producing food?

所以，无土栽培可以更廉价生产食物？

《柯林斯英汉双解大词典》

These communities are now turning to recycling as a cheaper alternative to landfills.

这些社区现正开始用回收这种较为廉价的方法替代废物填埋法。

《柯林斯英汉双解大词典》

A cheaper range of products was introduced to plug the gap at the lower end of the market.

推出相对廉价的一系列产品，是为了填补较低档市场的缺口。

《牛津词典》

A new way of making solar cells promises a cheaper way to generate electricity from the sun and new ways to integrate solar power into other products.

VOA: standard.2010.02.19

you can find a lot of things that celebrities wear, too, but for a cheaper price.

你也能找到许多名人穿戴的东西，但价格便宜很多。

推荐购物街 - SpeakingMax英语口语达人

Because it has been said that each American soilder cost us one million dollars a year Ambassodor is so much cheaper.

有人说一个美国士兵每年要花费一百万美元,相比之下，大使是如此廉价。

普林斯顿公开课 - 国际座谈会课程节选

Thirdly, we're envisioning a cheaper, mobile mobile iPad fitting into classrooms much better than the original.

ENGADGET: blogger-avatar

Investors will be hard pressed to find a cheaper stock in the high-flying technology sector.

FORBES: Is Apple The World's Best Value Stock?

America's misguided Treasury Department mistakenly believes a cheaper dollar will mean a better trade balance.

FORBES: Fact and Comment