Density modfulation
[电] 密度调制
🧩 词语组成解析
🗣️ 情景例句
I'll miss my birthday party on Saturday.
就会错过星期六我的生日派对。
We shouldn't have any trouble if the traffic isn't to heavy.
如果交通不太拥挤的话，我们不会有什么困难。
Before they were replaced by steamships,
在蒸汽船取代帆船之前。