Underswing
负脉冲(信号)(瞬态特性), 负尖峰(信号)
🗣️ 情景例句
when you called me.
当你打电话给我的时候。
For one thing,I've got to drop by the bank to get some money.
首先，我得去银行取一些钱。
In some moods, Nature shares it.
在某种状态下，大自然也有这种魅力。