As they watched, a tall tree in front of them seemed to beburningwith a white flame.
他们看到面前的一棵大树似乎着了火，闪着白色的火苗。
2
Backup power could also be provided by linking wind farms with a solar cell, with conventional or pumped-storage hydropower, or with efficient natural-gas-burning turbines.
将风力发电厂与太阳能电池、常规或抽水蓄能的水电或高效的天然气涡轮机连接起来，也可以提供备用电力。
3
So the question is how fast China can introduce technologies to reduce carbon emissions from coal-burning, or else replace coal with cleaner forms of energy, both of which will be expensive.