请问下面一段里的“they have all these trips down the rapids为何义?

请问下面一段里的“they have all these trips down the rapids为何义? 请教这个句子的主干 they have all these trips down the rapids 一段英文 No one is up all the time,nor are they down all the tim 英语翻译1 They have pulled down the old building.2 All the house They have two school trips every year改为一般疑问句 They have all finished doing the exercises They have pulled down the old building的同义句是什么啊? If people _____cutting down the forest,they will have nowher if people___cutting down the forest,they will have nowhere__ 英语翻译All the Way DownYou have broken meall the way down,down These require they have to corporate with the local governme they are all down in the dust where they rot one by one翻译