The Non-excludability and Non-rivalry are basic characteristics of public goods.
公共产品具有受益的非排他性、消费的非竞争性两个基本特征。
·2,447,543篇论文数据，部分数据来源于NoteExpress
At the first time since the fall of the Berlin Wall, an ongoing Olympic rivalry shapes up. In Beijing, the US won 110 MEDALS, the most ever won in a non-American Olympics.
自柏林墙倒下之后，新的竞争格局首次形成，美国在北京斩获110枚奖牌，是在非美国主办奥运会中的最佳战绩。
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