1. Old memories constantly recurred to him.
    往事经常浮现在他的脑海里。

2.

2. Old memories often recurred to him.
    往事常常重新浮现在他的心头。

3. Leap year recurs every four years.
    每四年闰年一次。

4. The builder recurred to the matter of the cost of remodeling our house.
    建筑商重新提起改建我们房子的费用问题。

1. danci.edu.pub

1. 再发生,重现：recuperate 恢复(健康) | recur 再发生,重现 | redeem 偿还,救赎,补偿

2. 重现,再回到：recourse 求助 | recur 重现,再回到 | recurrent 频频发生,重现,周期性的

3. 复发：recur to 重新提起 | recur 复发 | recurrence 复发

4. 再发生：editor 编辑 | recur 再发生 | scour 搜索

1. 复发;重现;再次发生
    If something recurs, it happens more than once.

    e.g. ...a theme that was to recur frequently in his work.
           一个在他的作品中反复出现的主题
    e.g. ...a recurring nightmare she has had since childhood.
           一个从她童年起就不断出现的噩梦

1. happen or occur again

    e.g. This is a recurring story

    Synonym: repeat

2. return in thought or speech to something

    Synonym: go back

3. have recourse to

    e.g. The government resorted to rationing meat

    Synonym: fall backresort