at timed intervals, as the Iranian president spoke.

VOA: standard.2009.08.28

At intervals her hand holding the cigarette would pass the spot on her neck.

他又郁闷又紧张,时不时地那个女人手中的烟灰。

耶鲁公开课 - 1945年后的美国小说课程节选

Another example is at the very opening of the book: The train was racing through treetops that fell away at intervals and showed the sun standing very red on the edge of the farthest woods.

在书的最开头还有一个例子：,“在树林中，火车疾驰，若隐若现,时不时地露出远方树林,边缘的火红的夕阳,一旁是弯弯曲曲。

耶鲁公开课 - 1945年后的美国小说课程节选

Remember we were talking about beat, which is the regular pulse, the pulse of life, the pulse of music, that comes at regular intervals.

我们讲到了节拍,节拍是一种有规律的律动,就像生命的律动一样,这是音乐的律动,节拍表现为有规律的间隔

耶鲁公开课 - 聆听音乐课程节选

And the experimenter is back there with the speed knob and at random intervals he just speeds up the tape of their heart and then slows it down.

实验者回到实验室，带着录音设备,随机地,他加速了心跳的录音,然后又慢下来。

耶鲁公开课 - 心理学导论课程节选