Generating enough light could be prohibitively expensive, unless cheap, renewable energy is available, and this appears to be rather a future aspiration than a likelihood for the near future.

除非有廉价可再生能源，否则制造足够光的成本可能会高得令人望而却步，而这似乎只是未来的愿望而非近期能实现的。

youdao

When all the students had a cup of coffee in their hands, the teacher said, "If you noticed, all the nice looking and expensive cups had been taken, but the simple and cheap ones had been left behind.

当所有的学生手里都拿着咖啡杯时，老师说：“如果你们有留意到，就会发现所有好看的和贵的杯子都被拿走了，而简单的和便宜的杯子都被留下了。”

youdao

Auto manufacturers try to cater for all the social levels, producing both super expensive and super cheap cars.

汽车制造商试图满足所有社会阶层，同时生产超昂贵和超低价汽车。

youdao

The shutdown is bad news for the recession-hit country partly because it will lose a source of cheap electricity and be forced to import more expensive energy.

VOA: standard.2010.01.01

Interestingly enough, the percentage moves are not much different between cheap stocks and expensive stocks.

很有趣的是，百分比的移动量在便宜股票和贵股票之间,没有什么区别。

麻省理工公开课 - 计算机科学及编程导论课程节选

There's definitely some more expensive places and some cheap places.

肯定有些地方贵些，有些地方便宜些。

在绿色市场 - SpeakingMax英语口语达人

Through this painful learning experience, she realized that the difference between expensive and cheap chocolate was not clear to consumers, and she'd have to figure out a better way to differentiate herself in the market.

WSJ: Stuck With 30,000 Boxes of Gourmet Chocolate

That, though, would make their meat more expensive, and cheap food has been the watchword of successive UK Governments for half a century.

BBC: The pointless slaughter?

Yet capital in India has tended to be in short supply and expensive, whereas labour has remained plentiful and cheap because so many people need work to escape from rural redundancy.

ECONOMIST: Few hands make work light