pitch-dark
突然一切变成漆黑一片，我失去了意识。
Suddenly, everything went black, and I lost consciousness.
当时那漆黑一片
It was pitch-black at the time.
— 巴克劳 (2019)
房间里几乎漆黑一片。
The room was almost completely dark.
＃唯有漆黑一片＃
#There was nothing but pitch darkness#
— 海德尔 (2014)