(as) clear as mud

US /əz klɪr əz mʌd/
UK /əz klɪr əz mʌd/
"(as) clear as mud" picture
1.

一点也不清楚, 模糊不清

very difficult to understand; not clear at all

:
His explanation of the new policy was as clear as mud.
他对新政策的解释一点也不清楚
The instructions for assembling the furniture were as clear as mud, so I had to guess.
组装家具的说明一点也不清楚,所以我只好瞎猜。