advance unopposed的意思|示意

如入无人之境 ... 仙境2 ragnarok online 2: the gate of the world 如入无人之境 encounter little resistance; advance unopposed; breaking all resistance; like entering an unpeopled land; (of troops) meet with no enemy resistance as if entering an unpeopled land 如入芝兰之室 like going into a room full of fragrant orchids; benefit from associating with people of a noble character; pervading uplifting character of a moral generation ...