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1 中英释义:
忙音信号
时间: 2025-12-23 04:08:07

busy signaln.忙音;占线信号;忙碌信号;占线提示音

重点词汇
  • 忙音

    busy signal; engaged tone; busy tone

  • 信号

    signal; sign; indication; cue; beacon; message; traffic light; semaphore