空中緩衝區

空中 kongˉ zhongˉ

(Aerial, In the sky, Sky) The sky, In the sky, Aerial

緩衝 huanˇ chongˉ

(Buffer, Buffered, Buffering, Buffers) Buffer, Buffers, Buffering, Buffered

緩衝區 huanˇ chongˉ quˉ

(Buffer) Buffer zone