recur frequently 频繁发生
recur periodically 定期出现
frequently recur 频繁重现
A: Why has this problem recurred?
A：为什么这个问题又出现了？
B: It recurred due to a technical error.
B：它再次发生是因为一个技术错误。
1) 再次发生
2) 重复出现
3) 重新出现
1. 再次发生，重现
verb
1. to happen again or repeatedly
Synonym: reappear, reoccur