The modem could not detect a dial tone. For troubleshooting information, click Help.
调制解调器无法检测到拨号音. 有关疑难解答信息, 请单击“帮助”.
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The old rotary dial telephone desk set. The touch tone version was called a 2500 set.
老式旋转式台式拨号电话. 而按键式电话称为2500.
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在电影里,当对方挂断我们的电话时,我们总听到那长长的拨号音。
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First you lift the receiver, wait for the dialing tone, then dial the number.
首先拿起话筒,等拨号音响了之后,再拨号码。
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