清洁煤炭？那是什么？
一些则喜欢核能，清洁的煤炭和天然气。
煤气化在高效、清洁利用煤炭资源方面有着非常重要的作用。
Coal gasification has an important function on high efficient and clean utilization of coal resource.
另外，煤炭如果可以作为清洁能源，技术性问题才是关键。
In addition, technical problem is the key if coal is able to be the clean energy.
天然气远比煤炭要清洁，碳排放量比煤炭低45%。
It's far cleaner than coal and it emits 45% less carbon than coal.
天然气远比煤炭要清洁，碳排放量比煤炭低45%。
It's far cleaner than coal and it emits 45% less carbon than coal.
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