因为考虑到释放二氧化碳的代价，并且众议院在六月份通过了排污交易法案(总量管制和交易法案)，以煤为燃料将会比较昂贵，而燃烧天然气会比较便宜。

Putting a price on carbon dioxide, as the cap-and-trade bill that passed the House in June would do, would make coal more expensive to burn and gas relatively cheaper.

youdao

潜水机器人已经移除了覆盖在石油泄漏处的旧防漏帽。这个帽盖是在六月上旬施放的防堵装置，与油管相连，用来把漏出的原油送至海面上的舰船或点火燃烧掉。

Robotic submarines removed the cap that had been placed on top of the leak in early June to collect the oil and send it to surface ships for collection or burning.

youdao

潜水机器人已经移除了覆盖在石油泄漏处的旧防漏帽。这个帽盖是在六月上旬施放的防堵装置，与油管相连，用来把漏出的原油送至海面上的舰船或点火燃烧掉。

Robotic submarines removed the cap that had been placed on top of the leak in early June to collect the oil and send it to surface ships for collection or burning.

youdao