求翻译：路由器是通过内部的路由表对数据进行转发，如果路由表没有的数据就丢弃不再转发，还可以透传多个vlan，进行nat转换等多种功能，比交换机和集线器高级。是什么意思？

The router is forwarding the data through the internal routing tables, data routing table does not drop no longer forwarded, but also can pass through the vlan nat conversion and other functions, senior than switches and hubs.

正在翻译，请等待...

Router is through the internal routing table to forward the data, if the routing table does not have a data drop no longer forwards, you can also pass more than one VLAN, NAT conversions are performed a variety of functions, such as, than switch and hub advanced.