难得明白
be dialing on参考 对不起 你拨打的电话正在通话中，请稍后再拨 （移动公司的）在通话 on the phone; 通电话1.on the phone 2.talk over the telephone 3.talk on the telephone 正在“通电话”be talking on the telephone the line is busy
樱桃大丸子子
通电话talk on the telephonetalk over the telephone例：Betty and Susan are talking on the telephone.贝蒂和苏珊正在通电话。
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