" The line is busy, Sir, " chanted the operator.

“电话占线， 先生，” 接线员喊道。

And some of the reasons why you can't get through: " The line is busy" .

还有一些打不通的原因：“线路占线” 。

If you call someone on the telephone and the line is busy or they don't answer, you could say, " I couldn't get through." I couldn't get to talk to the person.

如果你打电话给某人但线路占线或他们没有接听，你可以说，“我无法接通。”我无法与那个人交谈。