Rcas
(rca 的复数) abbr. 美国无线电公司（Radio Corporation of America）
🗣️ 情景例句
Uh, it must mean something.
噢 ，这很有意思。
That's track 1 at 9:45.
1轨道，9点45分开。
It would help if you could try to speak a little slower.
请你尽量放慢说话速度。