occur
intransitive verb
pres p occurring pt, pp occurred
1 (happen) «accident, event» 发生; «death» 来临; «epidemic» 爆发
2 (be present) «expression, misprint» 出现; «plant, tree» 存在
3 (suggest itself) «idea» 被想到;
to occur to sb; 被某人想到;
it only occurred to me later 我只是后来才想到;
did it never occur to you that something was wrong? 你从未想过出错了吗?