基本解释共享颐年优先配屋计划词组短语短语Unrelated Elderly Persons Priority Scheme 无亲属关系高龄人士优先配屋计划single elderly persons priority scheme 高龄单身人士优先配屋计划Elderly Persons Priority Scheme更多词组专业释义机械工程共享颐年优先配屋计划