Saprolith
残余土
🗣️ 情景例句
This method should be widely promoted.
这种方法应该推广。
So far I have been learning about England.
到目前为止，我一直在研究有关英格兰的事情。
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：