fringy

1. The literature on ball lightning is rather fringy, and you have to be careful to separate the credible ball lightning reports from the lightning and UFO lore.
   由于球状闪电行为的诡秘奇特，有人提出大部分UFO可能就是球状闪电。

adj

1. at or constituting a border or edge
   1. the marginal strip of beach

   Synonym:    marginal