Cisco NAT

object network 192.168.101.152
 nat (inside,outside) static 2.2.2.3

( Static will always take precedence of dynamic. So the above one will take effect ) 

object network 192.168.101.0
 nat (inside,outside) dynamic interface  ( 2.2.2.2 ) 

object network 192.168.101.101
 nat (inside,outside) static 2.2.2.3 service tcp https https

( The above one is more specific because it involves port. Also, https is destination port. So inbound traffic will take this route, not the first one )


192.168.101.20 -> 8.8.8.8 port 443 (dynamic pat)
8.8.8.8 -> 192.168.101.20 p[ort 443 (static https)

192.168.101.21 -> 8.8.8.8 port 443 (specific static nat 2.2.2.3)
8.8.8.8.8 -> 2.2.2.3 80 (192.168.101.21)

192.168.101.22 -> 8.8.8.8 port 443 (it will take the connection from 21, and build a new session)
This statement is not recommended, because one-to-one nat can be with only one IP, unless port is not specified )