But they've been too expensive to replace conventional power plants in most cases.

但是，在绝大多数情况下，燃料电池价格昂贵，无法替代常规发电厂。

youdao

Like conventional power plants, a nuclear site cranks out electricity using steam-driven turbines.

就像普通的发电厂一样，一个核发电厂需要蒸汽涡轮来发电。

youdao

And solar parks, which look like giant Lego kits, are easier to build than conventional power plants.

这方面太阳能可以替代。至于看上去像巨大的乐高积木桶的太阳能发电厂，比起建造传统的发电厂要容易多。

youdao

The primary argument against taking advantage of our affordable conventional energy sources is the emissions from conventional power plants.

FORBES: Obama Unites Global Warming Alarmists, Skeptics In Presidential Debates

Some of Mr Bush's advisers want to explore substituting conventional power plants for the nuclear ones promised, but South Korea opposes that idea.

ECONOMIST: South Korea and America

Solar thermal power, which is the most economical form of solar power production, additionally consumes at least double the water of conventional power plants.

FORBES: Obama Unites Global Warming Alarmists, Skeptics In Presidential Debates