Kevin Church/BBC News
const realIdx = i % len; // 取模映射到真实数组索引，模拟循环
。91视频对此有专业解读
Dr Fraser Hunter, Iron Age and Roman curator at National Museums Scotland, said: "I've looked at carnyces from around Europe, and the full research and conservation of these incredibly fragile remains will reshape our view of sound and music in the Iron Age."，更多细节参见同城约会
func extract2(c chan task) []task {