dawn on someone
phrasal verb with dawn verb [ I ] uk/dɔːn/ us/dɑːn/
C2 使…明白，使…意识到
If a fact dawns on you, you understand it after a period of not understanding it.
[ + that ] I was about to pay for the shopping when it suddenly dawned on me that I'd left my wallet at home. 我买完东西要付钱时才突然意识到我把钱包忘在家里了。