在远程站点回拨时检测到了占线信号。

Busy signal detected at remote site on callback.

youdao

他给律师打电话，但还是听到占线的信号。

He telephoned the lawyer and again got a busy signal.

youdao

他给律师打电话，但还是听到占线的信号。

He telephoned the lawyer and again got a busy signal.

youdao