Long white surplices, grave and seemly, gave place to gorgeous vestments and embroidered pluvials.

长长白色法衣，庄重得体，取是华丽法衣和刺绣雨衣。

And “pluvial” means rain, and it rained a whole awful lot.

“雨”意思是下雨，且下雨 了。

And their appearance in the fossil record corresponds with the Carnian pluvial episode, that period of intense seasonal rainfall that went on for two million years.

它们在化石记录中出现与卡尼期雨期相对应，那是持续 200 万年强烈季节性降雨时期。