相似的主题在他的多部小说中反复出现。

Similar themes ___recur in many of his novels.

在电影的关键时刻，一种不安感会反复出现。

A sense of unease ___recurs at key moments in the film.

如果该问题再次发生，请立即联系技术支持。

If the problem ___recurs, please contact technical support immediately.