您要查找的是不是：
- NAT嵌套 NAT embedding
- 嵌套 nesting
- 嵌套的 nested
- NAT-PT NAT-PT
- 动态NAT dynamic 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DO nested DO
- 正向NAT SNAT
- 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
