It occurs to: To be (suddenly) realized by one(突然想起/到……,恍然大悟); to come into one’s mind. [for an idea or thought] to come into someone’s mind. If a thought or idea occurs to you, you suddenly and unexpectedly start to think about it.
中文释义：(某人) 想起……，指〔主意或想法突然〕浮现于脑中，突然想起……，常用来表示自己突然想出一个好主意或好点子或者某件事情。另外引申一个相近意思的短语：it hit me 顿悟(恍然大悟)。例句: It occurred to me suddenly that I had met him somewhere. （我突然想起在什么地方见过他。）It occurred to me that she was jealous of me.（我突然发觉她嫉妒我。）