The customer product number and the operator suppose in advance in the parameter establishment, prepares the transfer inquiry.
客户产品号和操作员在参数设置内预设，以备调用查询。
If you must send a cable from a public telephone, ask the operator the charges in advance so you can be sure that you have the correct change.
你如果不得不使用公用电话发电报，先向电话员询问电报费用，以便你投入准确数量的硬币。
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