brown clay的用法和樣例：
例句
- The later period of karst corrosion deposit experienced lateritization, had accomplished the red clay basic characteristic.
岩溶殘餘堆積物後期又經歷紅土化作用，造就了紅粘土的基本特徵。 - Red clay came through Karst and laterization, and the special consolidation profile was formed in Karst and laterization.
同時，紅粘土經歷了岩溶作用與紅土化作用，最終形成了特殊的固結反剖面特徵。
