名词
中文翻译：操作员拨号盘
同义词：
['operator switch', 'operator dial']
例句：
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1.The operator dial on the phone is easy to use.
电话上的操作员拨号盘很容易使用。
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2.The engineer had to operate the dial to adjust the speed.
工程师不得不操作拨号来调整速度。
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3. She dialed the operator to get help with her computer problem.
她拨打了操作员来帮助解决她的计算机问题。