Oldfashioned
a. 旧式的
🗣️ 情景例句
I had a really bad day.
今天真是糟透了。
I learned grammar this afternoon.
我今天下午学语法。
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。