Microdrum
微分筒; 测微鼓轮
🗣️ 情景例句
I don't know.
我不知道。
They could not agree about the distribution of the profits.
他们对于利润的分配意见不一致。
Since its discovery, it has become a sort of potholers' Everest.
自从被发现以后，这个洞成了洞穴探险者的珠穆朗玛峰，