您要查找的是不是：
- backward busying signal 反向占线信号
- Busy signal detected at remote site on callback. 在远程站点回拨时检测到了占线信号。
- I don't know, I just keep getting a busy signal. 我不知道,对方电话老是占线。
- I just keep getting a busy signal. 我打的时候老是占线。
- B: I just keep getting a busy signal. 我打的时候老是占线。
- I can not reach the Peace Hotel, there is a busy signal. 我没法打通和平饭店，通话中。
- I've been trying to call her, but I keep getting a busy signal. 我不停的打电话给他,但老是占线。
- I can't reach the Peace Hotel, there's a busy signal. 我没法打通和平饭店,通话中。
- He telephoned the lawyer and again got a busy signal. 他打电话给律师, 但还是听到占线的信号。
- I called him, but could not get through. I keep getting a busy signal. 我打电话给他，但是没有打通，电话总是占线。
- If you called my office Saturday morning, you would have gotten a busy signal. 你要是周六早上给我办公室打电话，你就能听到占线的声音。
- All I get is a busy signal when I dial his number(= his phone is being used). 我什么时候拨他的电话听到的都是忙音。
- I kept trying to get through to you, but all I got was a busy signal. 我一直在不停地给你打电话，但我听到的总是忙音。
- He lined out for home without a backward glance. 他头也不回，急忙往家里走去。
- This part of the country is still backward. 这个国家的这个地区仍很落后。
- In some cities housing conditions went backward. 某些城市的住房条件越来越差。
- The teacher was patient with backward children. 那位老师对迟钝的学童十分耐心。
- He looked backward over his shoulder. 他回头向后看。
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- She looked backward over her shoulder. 她回头往後看。
