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

长长的白色法衣，庄重得，代之的是华丽的法衣和刺绣的雨衣。

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

“雨”的意思是下雨，且下雨 了很多。

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.

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