词汇	frame rucksack
释义	frame rucksack 🌏铝架背包
随便看	primary carpophagous insects primary carrier primary carrier flow primary-carrier flow Primary Casualty Receiving Ship primary cataract primary cation exchanger Primary Central Alarm Station primary central diabetes insipidus primary cause primary causes primary cavitation primary cavity primary cavity-nesting birds primary cell primary cell cell primary cell cell, voltaic Primary cell cuhure primary cell culture primary cell, galvanic cell primary cell lethality primary cell line primary cell lines primary cell membrane primary cell of kinematic chain