charcoal和carbon 的区别
charcoal 是木碳，carbon 泛指碳原素
例句：
The allotropes of carbon include diamond, graphite and charcoal, all with the same chemical properties.
碳的同素异形体包括金刚石、石墨和木炭，所有这些物质都具有相同的化学性质
charcoal 是木碳，carbon 泛指碳原素
例句：
The allotropes of carbon include diamond, graphite and charcoal, all with the same chemical properties.
碳的同素异形体包括金刚石、石墨和木炭，所有这些物质都具有相同的化学性质