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？

youdao

Expensive though they are, fuel cells have also begun allowing some companies to save money.

燃料电池尽管昂贵，也开始使有些公司节约资金。

youdao

Enriching raw uranium is more expensive than converting highly enriched uranium to fuel grade.

浓缩原铀比将高浓缩铀转化至燃料品级更昂贵。

youdao

"We do not,in any way, intend to come to market with fuel that is more expensive than gasoline,".

VOA: standard.2009.09.02

"We,in fact,intend to come to market with fuel that is less expensive than gasoline."

VOA: standard.2009.09.02

"Tractors are always running," "So we're always burning fuel." Pitt and many other U.S. farmers are concerned that fuel may be can more expensive under climate change proposals that U.S.congress and negotiators in Copenhagenare considering.

VOA: standard.2009.12.12

Allegiant rides out fluctuating fuel costs by cutting flights when expensive fuel makes them unprofitable.

FORBES: Is Allegiant Ready For Take Off?

Airlines say on long routes, they've slowed down planes to conserve expensive fuel.

WSJ: Why Airlines Are Shrinking Flight Times

President Obama is under pressure from all sides to waive the ethanol requirement for less expensive fuel and food.

FORBES: After Billions Of Taxpayer Dollars, Green Transportation Is A Bust