Rcas
(rca 的复数) abbr. 美国无线电公司（Radio Corporation of America）
🗣️ 情景例句
You're welcome.
不用谢
It won't work.
行不通。
The dancer ran in a straight line, wagging from side to side.
跳舞的蜜蜂左右摇摆地沿直线飞。