这场灾难是由环保主义者造成的，该环保主义者被控保护荒野，荒野又犯了一个可怕的错误，并在此过程中证明了他们了解他们打算保护的环境的知识很少。
(This disaster was caused by environmentalists charged with protecting the wilderness, who made one dreadful mistake after another-and, along the way, proved how little they understood the environment they intended to protect.)