Archaeological study of woodcharcoal found in hearths dating to the various episodes of occupation indicated that the species use changed in a patterned way.
考古研究发现，在壁炉中发现的木炭可以追溯到不同的时期，这表明物种的用途发生了模式上的变化。
2
Woodcharcoal contains up to 98% carbon.
木炭含有相当于98％的碳。
3
No candle flickered at their table, but a bucket of fiery woodcharcoal hissed in the tabletop grill pit.