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	ascertain ascertainable ascetic ascetically asceticism ASCII ascot ascribable ascribe aseptic asexual asexually asexual reproduction ash ashamed ashcan Ashe, Arthur ashen Asher Ashgabat ashore ashram ashtray Ash Wednesday ashy

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