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词语解释
必备[ bì bèi ]
⒈ 必须具备。
例必备条件。
英essential;
⒉ 为某种目的而必须具备的。
例必备的学习用具。
英necessary;
国语辞典
必备[ bì bèi ]
⒈ 一定需要。
例如：「急救箱是每个家庭不可或缺的必备用品。」
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