If we look at a cross section of a water wave, we may see that the wave form repeats itself at regular intervals. 如果我們觀察水波的橫截面，我們會看到波形是按一定的間隔重複的。
Please let us know what quantities you are able to deliver at regular intervals, quoting your best terms FOB Brisbane. 懇請告知貴方定期所能發貨的數量，望給予FOB布里斯班最優惠價格。
An occasion for feasting or celebration, especially a day or time of religious significance that recurs at regular intervals. 節日，喜慶日享受或慶賀的時節，尤指在宗教意義上有定期間隔的一天或一段時間
Published at regular intervals of more than one day. 期刊以長於一天的固定間歇出版的
