英语题目求解释atdark与inthedark都有吗?一样吗?

Question

英语题目求解释
at dark 与 in the dark 都有吗?一样吗?

Answer 1

in the dark
1.在黑暗中
He was sitting silently in the dark.
他静静地坐在黑暗中.
2.不知道
He was completely in the dark about the plan.
他对这计划一无所知.
at (after,before) dark
天黑时（后,前）