offering trunk的用法和樣例：
例句
- Bulk Encryption Simultaneous encryption of all channels of a multichannel telecommunications trunk.
集中加密多通道電信中繼線中所有通道同時加密。 - This requires new kinds of circuit-switching gateways that feature LAN interfaces and telephony trunk connections to public networks and PBXs.
這就要求用新型的電路交換網關，它們具有區域網介面和與公用網和用戶交換機電話中繼線連接的特點。
