If this server is not available, the gateway re-routes the request to the next available server.
如果这个服务器不可用,网关重新将请求路由到下一个可用服务器,依次类推。
互联网摘选
Vary your routes and workouts, so you're not doing the same runs over and over again.
改变你的路线和训练, 那样你就不会一遍又一遍地做着相同的事情.
网络文摘精选
