点击下方单词,选择对的这个单词
名词
1. 石墨Graphite is a soft black substance that is a form of carbon. It is used in pencils and electrical equipment.
1. used as a lubricant and as a moderator in nuclear reactors
Synonym: black leadplumbago
多通过句子记忆单词,而不是单独死记硬背。