全体召回时，竞委艇升起代一旗并发出音响信号二声。
When General recall, RC boat will displayed First Substitute flag plus Two sound signal.
她必须在另一站下车。再看一遍时间表，莎拉应该在哪里下车，才能可以走更短的路到旗街？
She has to get off at another stop. Look at the schedule again, where should Sara get off the bus so that she can have a shorter walk to Flag Street?
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