sandstone的例句（sandstone在句子中的用法）

• ...the reddish sandstone walls. 淡红色的砂岩墙
• Both clay and sandstone are unstable rock formations. 黏土和砂岩都是不牢固的岩石构造。
• Behind the habitations, the sandstone cliffs rose abruptly to the north and west. 在居住区后面，北边和西边陡然高耸着砂岩悬崖。
• ...a sandstone bed. 砂岩层