Knapper
n. 破碎器, 碎石槌
🗣️ 情景例句
I had a nice evening.
让我过了一个愉快的夜晚。
The efficiency is greatly raised,and the intensity of labor is decreased.
工作效率大大地提高了，而劳动强度却降低了。
One man was told to fix up an air-line to provide compressed air for the machines they were using.
有个工人被派去安装"供气管"，给他们正在使用的机器提供压缩空气。