# limestone ##### 词义 - 英:/ˈlaɪmstəʊn/; 美:/ˈlaɪmstoʊn/ - #词性/n 石灰石;石灰岩 ##### 例句 - The basic ingredients are limestone and clay in the proportion 2:1 . - 基本成分是石灰石和黏土,比例为2:1。 - The area is being quarried for limestone . - 这地方正在开采石灰石。 - The large limestone caves are also quarried for cement . - 同时还在这些大石灰岩洞里开采水泥原料。 ##### 形态 - #形态/word_pl limestones