帮我分析一下下面的句子

题目

帮我分析一下下面的句子
All this extra methane carries more water vapor into the upper atmosphere,where it condenses at much higher altitudes to form more clouds that the sun’s rays still strike long after sunset has brought the beginning of night to the surface far beneath them.
在句子尾部,has brought 的主语是什么?
另外,请帮我大概翻译一下这个句子.

答案

has brought 的主语是sunset.after sunset has brought the beginning of night to the surface far beneath them是时间状语从句.
这多余的甲烷携带了更多地水蒸气,进入大气层上层,在高得多的高度凝结形成更多地云朵,在落日给下边的地表开始带来黑夜很长时间以后,太阳光还能够照射到这些云朵.