名词短语
中文翻译：自给自足的背包
同义词：
['self-sufficient pack', 'self-reliant pack']
例句：
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1. The hikers carried aself-supporting pack filled with foodand water.
徒步旅行者携带了一个装满食物和水的自给自足的背包。
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2.The team decided to carry a self-supporting pack for the long journey ahead.
团队决定携带一个自给自足的背包，以应对即将到来的长距离旅行。
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3. The young explorers packed their self-supporting packs with essential survivalsupplies.
年轻的探险家们用他们的自给自足的背包装载了生存必需品。