marlstone mrlst硬泥灰岩
marlstone e泥灰土
marlstone rock泥灰岩
mrls marlstone泥灰石
Marlstone High School泥灰岩高中
同义词:marlite
N(名词) a type of marl that contains clay and calcium carbonate and is resistant to the decomposing action of air (抗风化的)泥灰岩