Ipsec
abbr. 网际协议安全（Internet Protocol Security）
🗣️ 情景例句
I know. How old is she?
我知道。她多大了？
Nature teaches us to love our friends but religion our enemies.
自然教我们爱朋友，宗教却教我们爱敌人。
A short time before, great trees had covered the countryside for miles around.
就在不久之前，参天大树还覆盖着方圆数英里的土地。