discretionary (adj.)是什么意思，discretionary (adj.)的翻译，discretionary (adj.)音标、读音、用法和例句

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discretionary (adj.)是什么意思，discretionary (adj.)的翻译，discretionary (adj.)音标、读音、用法和例句_菜篮子兴趣思朗文词典

discretionary (adj.)

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