Preforms
v. 预先形成( preform的第三人称单数 )
🗣️ 情景例句
And let Rita Mae do the selling at the boutique.
而让Rita Mae在时装店里负责销售。
A word spoken is past recalling.
一言既出，驷马难追。
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。