from time to time

基本解释

But the thing seemed to follow him. From time to time, it groaned.
但有个东西似乎一直在跟着他走，还不时地发出呜咽声。
Sometimes going over the top is good, if you can let yourself go from time to time, people will notice.
有时挣脱束缚是好的，如果你能够让自己一次又一次地挣脱束缚，人们会注意到你的。
People from the church would come by my trailer from time to time to tell me they were still praying for me, and that they hoped I would come back to Jesus before I wound up in hell.
教会的人时不时会到我的拖车上来，告诉我他们依然在为我祈祷，希望我不要在去往地狱的道路上越走越远，早日回到耶稣我主的身边。

To some people,they are nothing more than a harmless treat or a guilty pleasure to enjoy from time to time.
And from time to time, particularly in section discussion, you will have occasion to consider the ways in which sometimes in very contradictory ways--over the centuries.
在课堂讨论中，大家需要不断地去考虑,有时候甚至可能是持续几个世纪的完全相反的说法。
耶鲁公开课 - 旧约导论课程节选
Yeah, it's kind of a color that you throw in from time to time for special effect.
对,它就如同制作视觉特效时,添加的色彩
耶鲁公开课 - 聆听音乐课程节选

From time to time we are invited by UNESCO to host UNESCO international activities in New Zealand.
UNESCO: What we do