[ C/U ]   music   plural A’s or As in Western audio, the sixth Be aware in the scale (= series of notes) that starts about the Observe C, or even a list of notes determined by this note知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。The Arroios neighbourhood – the multicultural parish of to