释义
adj.
〈正式〉 需要的；必要的
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a further word was needful .需要再叮嘱几句。
needy
贫困的，贫苦的
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she gave her money away to needful people .她把她的钱都给了贫苦的人。
n.
what is necessary
必须做的事情
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I call upon the authorities to do the needful. 我吁请当局做些必须做的事情。