问题描述：
请问下面一段里的“they have all these trips down the rapids为何义?
Oh!it's in Colorado.They have all these trips down the rapids.The water gets really rough,but I think it'll be really exciting.
Oh!it's in Colorado.They have all these trips down the rapids.The water gets really rough,but I think it'll be really exciting.
问题解答：
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