名词
中文翻译：收费电话线
同义词：
['ringing toll line', 'toll line']
例句：
-
1.The ring-down-toll line is the first thing you hear when you dial a phone number.
当你拨打电话时，首先听到的是收费电话线。
-
2. The ring-down-toll line was used to connect businesses with each other.
收费电话线用于连接企业之间。
-
3. The ring-down-toll line is essential for emergency services.
收费电话线对于紧急服务至关重要。