只要外出足够安全，快递员就开始在仍然可以通行的路线上分发之前累积的邮件。
As soon as it's safe enough to be outside, couriers start distributing accumulated mail on the still-accessible routes.
机场公路今天是一周来第一次可以通行。
The airport road is passable today for the first time in a week.
暴风雨没有把这座桥冲垮，但桥上已经没有人可以通行的路了。
The storm had not washed this bridge away, but there was no footpath across it.
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