Compensatrix
[地质]平衡水袋
🗣️ 情景例句
It might be simpler and less expensive .
这样可能比较简单而且省钱。
The morning to the mountain the evening to the fountain.
凡是都有一定时间。
The geologist needs to know what rocks the drill has reached,
地质学家需要知道钻头已经到达什么样的岩层，