例句 |
The limestone has simply dissolved away.石灰石就这么溶解掉了。Between the white limestone and the greyish pink limestone is a thin bed of clay.在白色石灰石和粉灰色石灰石之间是一层薄薄的黏土。Limestones formed from shells are zoogenic.贝壳形成的石灰石是动物生成的。The land here was quarried for limestone in the past.过去,这片地曾开采过石灰石。 |