特指虫子巢穴。

不会无中生有，都是别处迁移过来的。你的防线有漏洞。

没碰到过，一般都是用激光围起来。

如果你玩过任何rts游戏，明白战争迷雾的机制，你就不会觉得奇怪了。

给你贴一段官方文档关于虫群扩散描述。
Expansions
Every 4-60 minutes, a group of 5-20 biters/spitters will leave their base to create a new base which will consist of as many worms/nests as there are members in the group. This group will search for a suitable spot that's 3-7 chunks away from existing bases. The interval between enemy expansions is global, and the higher enemy evolution, the shorter the interval is on average. Furthermore, with higher evolution, the groups are bigger on average.
Once they have found a suitable spot, each biter/spitter in the group dies and forms a new nest or worm. There is a delay between each member sacrificing itself for to create a worm/nest, so creating the new base from the expansion group can take quite a long time, depending on the group size. Medium worms are only formed if the current evolution is higher than 0.3, big worms only if the current evolution is higher than 0.5 and behemoth worms are only formed if current evolution is higher than 0.9. The game randomly chooses whether to form a new biter nest, spitter nest, small worm, or bigger worm if the evolution factor is high enough. [2]

只会迁移 你搞个大炮 就知道了

搞个重炮试试

放置雷达时，小地图有个白色方框范围。这个范围内是不会刷虫子的。 想保持地盘的绝对安全，就用防御把基地围起来，里面用雷达笼罩起来。