I was almost there when a sarcastic voice below said, 'I don't think the windows need cleaning at this time of the night

问题描述:

I was almost there when a sarcastic voice below said, 'I don't think the windows need cleaning at this time of the night
when a sarcastic voice below said 这句是什么用法呢?
高人指点谢啦!
主要这个below said 是怎么用的呢

这时时间状语从句啊
这里when相当于and then
再如
i was about jump into the river when the guide stopped me
我正要下河游泳,突然(这时)导游拦住了我