在过去的十年里提出了许多支持灾变说的证据。
Much evidence has been produced in the past decade to support catastrophism ;
看来，灾变说是一个极不牢固的理论，涉及到有关事件及其反馈的幅度等严重问题。
It seems catastrophism is an unstable theory with serious problems concerning the magnitude of the event and its repercussions .
灾变说