Radiospectrum
射频频谱
🗣️ 情景例句
Hello, nice to meet you. By the way, nice shoes you have.
你好，很高兴见到你。 顺便提一下， 你的鞋子很漂亮。
In college I majored in history, What was you major?
大学时我主修历史，你主修什么呢？
It has been said that everyone lives by selling something.
据说每个人都靠出售某种东西来维持生活。