Laticometer
胶乳比重计
🗣️ 情景例句
I'll get you to help serve later.
等一会我会叫你帮忙分菜。
It is never too late to learn.
什么时候学习都不晚。
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，