Lectotype
n. (标本的)选模式
🗣️ 情景例句
I have a full house.
我有一个罗汉。
To paint the roof
油漆屋顶
and we control it by means of the mud which we circulate down the drill pipe.
我们让泥浆顺着钻杆向下循环，用这种方法来控制压力。