argillaceous marl

例句：

1. 1. Theancient city is covered with argillaceous marl, which has been preservedfor thousands of years.
   这个古老的城市被黏土岩覆盖，这种岩石已经保存了数千年。
2. 2. The construction crew usedargillaceous marl to buildthe foundation of the new hospital.
   建筑队使用黏土岩来建造新医院的地基。
3. 3. The geologists found that the argillaceous marl was formed millionsof years ago during the dinosaur era.
   地质学家发现，这种黏土岩是在数百万年前恐龙时代形成的。