您要查找的是不是：
- NAT嵌套NAT embedding
- 嵌套nesting
- 嵌套的nested
- NAT-PTNAT-PT
- 动态NATdynamic NAT
- 嵌套循环nested loop
- NAT穿透NAT traversal
- 括号嵌套parenthesis nesting
- NAT会话NAT session
- NAT穿洞NAT through hole
- 真嵌套[计] proper nested
- 嵌套DOnested DO
- 正向NATSNAT
- 嵌套层nesting level
- 嵌套递归式nested recursion
- 嵌套法nesting
- 嵌套宏调用nested macro call
- 嵌套宏定义nested macro definition
- 嵌套宏结构nested macro structure
- 嵌套级nesting level
