recur

recur [riˈkə:] vi. (recurred; recurring)

1. ■ (问题、困难等)再发生; (疾病等)复发; 重现; 翻来覆去

2. ■ 回想; 重新提起(to); 再回到

3. ■ 【数】递归, 循环

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

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

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习惯用语

recur to

1. ■ 重新提起; (往事等)重新浮现