Rach
abbr. 随机接入信道（Random Access Channel）
🗣️ 情景例句
We want to be sure that you're responsible
我们要确定你是肯负责的，
I'll take you advice.
我接受你的忠告。
But which language is the most widely spoken in the world?
但是世界上哪种语言运用最广泛？