Sndcp
子网相关汇合协议
🗣️ 情景例句
The news reporter said that an airplane has just crash landed.
新闻播音员说一架飞机在着陆过程中坠毁了。
What are you playing?
你正在玩什么？
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。