Living in a hotel, we have no choice but to pay much more for telephone service than what a private line in an ordinary house would cost.
住在宾馆里，我们要付的电话费比一般家庭的电话费要高，但我们别无选择。
The POTS service unit provides plain ordinary telephone services and audio dedicated line services.
POTS业务单元提供普通的电话业务，音频专线业务。
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