第一种是市场常见的收益类型，带有风险溢价性质。

The first is market type returns with a risk premium.

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自从我们所有的内建集合类型实现了此接口以后，在那些最常见场景下并未获得任何性能收益。

Since all of our built-in collection types implement this interface there are no perf gains in the most common scenarios.

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网络广告的收入正在增长，因此选择最佳的广告类型将为广告商带来更多收益。

Revenue for online advertising is on the rise, so serving the optimal type of AD could bring advertisers more money.

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