soft coal

基本解釋

The combustion parameters of petroleum coke are between soft coal and anthracite .
石油焦的燃燒特性指數大約処於菸煤和無菸煤之間。
The combustion characters of petroleum coke were between those of soft coal and anthracite .
石油焦的燃燒特性処於菸煤和無菸煤之間。
After spring plowing it looks oil-blackened or colored by the soft coal which occurs in great veins throughout the state.
春耕之後，泥土油亮而烏黑，像是被遍佈全州的大鑛脈裡松軟的菸煤染過似的。

In his first, he told weary Britons that even New York was a war casualty, driven to burning filthy soft coal and hoarding butter.
ECONOMIST: Alistair Cooke
Which makes sense, considering that it's the stuff that coal is made of (lignite coal is soft brown coal formed from geologic pressures on forests that died millions of years ago).
FORBES: Ethanol
He will also announce plans for a fresh round of soft loans to help clean up China's filthy coal-burning power stations.
ECONOMIST: Japan’s war with China, revisited