Fluoridation
[医] 氟化
📖 牛津释义
fluoridation
n[U].
🗣️ 情景例句
Of course, Harry.
当然可以， Harry。
Speak little of your ill luck and boast not of your good luck.
少说失意事，莫夸好运道。
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。