Underswing
负脉冲(信号)(瞬态特性), 负尖峰(信号)
🗣️ 情景例句
I have a ticket, I know.
我知道我有车票。
What's your favorite musical instrument?
你最喜欢的乐器是什么？
'Well, in that case, I prefer to stay on the bus,' I answered.
“好吧，既然如此，我还是留在车上吧。”我回答说。