短語詞組短語derived d data item 導(dǎo)出數(shù)據(jù)項derived data -item 推導(dǎo)數(shù)據(jù)項actual derived data item 實際導(dǎo)出數(shù)據(jù)項;實際任意數(shù)據(jù)項actual l derived data item 實際導(dǎo)出數(shù)據(jù)項 返回 derived data item