Rcas
(rca 的復(fù)數(shù)) abbr. 美國(guó)無(wú)線電公司（Radio Corporation of America）
??? 情景例句
You're welcome.
不用謝
It won't work.
行不通。
The dancer ran in a straight line, wagging from side to side.
跳舞的蜜蜂左右搖擺地沿直線飛。