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It's possible you didn't hang up your phone properly. If the receiver was ajar, the line would not have been disconnected.
可能是您没有挂好电话听筒。如果没有放好听筒，通话的线路就不会被截断。
youdao
If the receiver was ajar, the line would not have been disconnected.
如果没有放好听筒，通话的线路就不会被截断。
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