A service that most people used at a painfully slow speed on a dial-up modem.
一个大多数人在拨号调制解调器十分缓慢而痛苦的速度下使用的服务。
For example, an ISP can use transparent proxy caches for its dial-up modem clients without their ever knowing about it.
例如，ISP可以对其拔号调制解调器客户使用透明代理高速缓存，而用户根本不会知道。
For dial-up connection, you need a computer, a modem, and a telephone line.
拨号上网需要一台电脑、一个调制解调器和一条电话线。
Modem enables the mutual conversion of analog signals and digital signals. Dial up connection is impossible without medom.
调制解调器是实现模拟信号和数字信号互相转变的设备，通过它用户的电脑才可连接因特网。
Modem enables the mutual conversion of analog signals and digital signals. Dial up connection is impossible without medom.
调制解调器是实现模拟信号和数字信号互相转变的设备，通过它用户的电脑才可连接因特网。
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