他说，此后，重建过程就开始了—虽然略微有点滞后于时间表。
Since then, he says the reconstruction process has moved forward - albeit slightly behind schedule.
入水不能太窄的原因在于：如果太窄的话，你外划的时间就加长了，开始划水的时间就滞后了。
And the reason that you do not want them to be that narrow is because it takes too long to get out and enter the stroke.
如果在记录时间内仪器移动，则测量的有效中心和刚开始的测量点有一定的距离，这一距离就是滞后距离。
If the tool is moving during this period, the effective center of measurement will be a certain distance from the point at which the measurement started. This distance is the lag.
如果在记录时间内仪器移动，则测量的有效中心和刚开始的测量点有一定的距离，这一距离就是滞后距离。
If the tool is moving during this period, the effective center of measurement will be a certain distance from the point at which the measurement started. This distance is the lag.
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