deep本身就有名词的意思。
deep名词讲是“深处”的意思
如：
The snow is three feet deep.雪有三英尺深。
They got lost in the deep of the forest
名词：
"in the deep of night"; "in the deep of winter" …
lnto our deep, dear silence
到我们深深的悲伤的寂静中
. to a great depth; "dived deeply"; "dug deep" +
