Ballastron
镇流管
🗣️ 情景例句
Oh, you know I never answer that question, Harvey.
噢 你知道我从不回答这类的问题 Harvey。
Keep the change.
不用找了。
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。