Underfrequency
降低了的频率, 最低的频率, 低于额定频率
🗣️ 情景例句
Take your medicine like a man.
做一个男人，去接受磨练吧！
My brother used to speak French to me all the time.
我的兄弟过去总是对我说法语。
The porter went to fetch one and arrive back with the station master,
搬运工跑回去取时刻表，同时请来了站长。