他自不知段誉记不明白六路剑法中这许多繁复的招式.
The phrase above comes from DGSD. forgot_password (FP) translates 记不明白 as not remembering clearly. Specifically FP is saying that 'verb + 不明白' would mean not clearly. But I think it means not understanding, i.e. 读不明白 when talking about a book would be read but don't understand as oppose to cannot read it clearly.
Can anyone help on this?