192.170.100.0    255.255.255.0   192.170.100.10  192.170.100.10       20

意味着192.170.100.0网络上的任何内容都将使用192.170.100.10作为网关

Means that anything on the 192.170.100.0 network will use 192.170.100.10 as it's gateway

192.170.100.10  255.255.255.255        127.0.0.1       127.0.0.1       20

意味着寻找192.170.100.10的任何内容实际上都会发送到环回(本地)地址.

Means that anything looking for 192.170.100.10 will actually get sent to the loopback (local) address.

192.170.100.255  255.255.255.255   192.170.100.10  192.170.100.10       20

是192.170.100.0网络的广播地址.

Is the broadcast address for the 192.170.100.0 network.