例句與造句

1. Layer 2 tunneling protocol ( l2tp ) , a more secure version of point - to - point tunneling protocol ( pptp )
   第二層隧道協(xié)議（ l2tp ） ，是一種比點(diǎn)對(duì)點(diǎn)隧道協(xié)議（ pptp ）更安全的版本。
2. It's difficult to find point-to-point tunneling protocol (pptp) in a sentence. 用point-to-point tunneling protocol (pptp)造句挺難的