- 推荐网络例句
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Summary u u u Public goods are neither rival nor excludable.
公共物品既无竞争性又无排他性。
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I don't need two pianos.
我不需要两部钢琴。
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Sebastian: It's empty, John, that's what's wrong with it.
它是空的。这就是问题。
Summary u u u Public goods are neither rival nor excludable.
公共物品既无竞争性又无排他性。
I don't need two pianos.
我不需要两部钢琴。
Sebastian: It's empty, John, that's what's wrong with it.
它是空的。这就是问题。