dawn onsb
—phrasal verbwithdawnverb[I]uk/dɔːn/us/dɑːn/
C2
If afactdawnson you, youunderstandit after aperiodof notunderstandingit.
使…明白，使…意识到
[+ that]I was about topayfor theshoppingwhenitsuddenlydawnedon methatI'dleftmywalletathome.我买完东西要付钱时才突然意识到我把钱包忘在家里了。