English translation for "occur at irregular intervals"
不定期发生
Related Translations:
occur: vi.(-rr-)1.(事件等)发生。2.被想到,想起。3.出来,出现;存在;被发现。短语和例子An accident occurred. 发生了一起事故。 if anything should occur 如果发生什么事的话。 A happy idea occurred to me. 我想起了一个好办法。 It occurred to me that ....我想到…。