at regular intervals
- He comes back to see us at regular intervals.
他每隔一段时间就回来看看我们。 - A publication issued at regular intervals of more than one day.
期刊以多于一天的周期定期出版的出版物 - If we look at a cross section of a water wave, we may see that the wave form repeats itself at regular intervals.
如果我们观察水波的横截面,我们会看到波形是按一定的间隔重复的。
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