Quadraphonics
(=qudrasonics)四声道立体声
🗣️ 情景例句
Five?
5号
Observation is the best teacher.
观察为良师。
The city at one time must have been prosperous, for it enjoyed a high level of civilization.
这座古城肯定一度很繁荣，因为它曾享有高度的文明，