But hauling tons of equipment to the moon to make fuel and build a life support system for a moon base, wouldn't that be too expensive?

但是把成吨的设备运到月球去制造燃料，并为月球基地建造一个生命维持系统，那不是太贵了吗？

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"One of the challenges we have is to make the Web a lot easier to use even on the simplest and least expensive mobile phones."

VOA: special.2010.11.08

New York is an expensive place to make a movie.

纽约这个地方拍电影很贵的。

电影里的中央车站 - SpeakingMax英语口语达人

And if they do, it can be very expensive. So we see unused space as a great place to grow food that will make it more accessible for people."

VOA: special.2010.07.06

But it now appears that Huffington did make a very expensive mistake that has cost her dearly.

FORBES: Move up http://i.forbesimg.com t Move down

Jean-Claude Biver, Hublot president, said it will be difficult to make a more expensive timepiece because of the size limitations on the surface of a watch, according to media reports.

FORBES: The World's First $5 Million Watch

So now the president wants to provide businesses with a subsidy to make it less expensive to hire a new employee.

FORBES: Yet Another (Failed) Obama 'Jobs Plan'