例句與造句

1. Carrier Ethernet demarcation devices are required to support services, such as Ethernet Private Line ( EPL ), Ethernet Virtual Private Line ( EVPL or E-LAN ), and Ethernet Virtual Private Tree ( E-Tree ), as specified by the MEF . Such support needs to include service level agreement ( SLA ) management capabilities, with consistent performance over fiber, DSL, bonded PDH, and SDH / SONET access lines.
2. It's difficult to find ethernet virtual private tree in a sentence. 用ethernet virtual private tree造句挺難的