单词	backpack
释义	noun | verb backpackbackpack1 /ˈbækpæk/ ●●○ noun [countable] a bag carried on your back, often supported by a light metal frame, used especially by climbers and hikers (=walkers) noun | verb backpackbackpack2 verb [intransitive] to go walking and camping carrying a backpack:  We were backpacking on the Appalachian Trail.—backpacker noun [countable]
随便看	obstinacy obstinate obstinately obstreperous obstruct obstruction obstructionism obstructionist obstructive obtain obtainable obtrude obtrusive obtuse obtuse angle obtuse triangle obverse obviate obvious obviously ocarina O'Casey, Sean occasion occasional occasionally

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