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每一个实作此介面的类别都必须为这些成员提供实作的细节。
Every class that implements the interface must supply the implementation details for theses members.
youdao
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每一个实作此介面的类别都必须为这些成员提供实作的细节。
Every class that implements the interface must supply the implementation details for theses members.
youdao