很多;大量
a large amount or number of something
The teacher looked down and saw a sea of smiling faces. 老师向下看去，看到一张张微笑的脸庞。
It's been raining nonstop here for three days and I'm surrounded by a sea of umbrellas.
The singer looked out over a sea of waving hands.
The floor of the crater melted and turned into a sea of molten rock.
In April, this whole meadow becomes a sea of wildflowers.
See also: sea