块煤的英文：
bitumenite
torbanite

break a piece of coal into small lumps
把一块煤砸成小块

Put a few more lumps of coal on the fire.
再往火里添几块煤。

When he looked mechanically up into the sky, he saw ragged, soot-coloured clouds scudding in front of the moon
他机械地往天空一望，看见一块块煤烟色的散碎云朵正在月亮前边飞行着。