例句
The Great Dyke of Zimbabwe is a layered mafic intrusion of igneous, metal-bearing rock that has been dated to approximately 2.5 billion years old.
津巴布韦大堤是一个分层的火成岩，金属镁铁质侵入岩轴承已追溯到大约2.5亿年的历史。
Dr. Matter is involved in another similar study of peridotite, an igneous rock, where it occurs in a large formation in the Middle Eastern country of Oman.
马特博士还参与了另一项在中东国家阿曼进行的、与此相似的火成岩橄榄岩研究。