If not otherwise directed, it maintains a constant interval of 5 feet between itself and you.
如果没有特别指示，它会和你保持5呎不变的间隔。
Because P and S waves travel at different but fairly constant speeds, the interval between their arrivals increases in proportion to the distance from the earthquake focus, or initial rupture point.
由于P波和S 波以不同但相当恒定的速度传播，它们到达的间隔与到震源或初始破裂点的距离成比例地增加。
The summation forms are quite convenient for computation, especially when the interval is kept constant.
和式形式是十分有利于计算的，特别是当间隔保持常值的时候更是如此。
Try to pace yourself so that the slow shifting of your glance from one thing to another involves a fairly constant time interval.
在你的眼光由一物缓缓地移向另一物之际，试着给予等长的时间。
Try to pace yourself so that the slow shifting of your glance from one thing to another involves a fairly constant time interval.
在你的眼光由一物缓缓地移向另一物之际，试着给予等长的时间。
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