Implementers shouldn't need to jump through these hoops. When you find yourself needing to relax or bypass spec semantics just to achieve reasonable performance, that's a sign something is wrong with the spec itself. A well-designed streaming API should be efficient by default, not require each runtime to invent its own escape hatches.
优点：输出范围在 (0,1)，可以表示概率
，这一点在同城约会中也有详细论述
Free plan Features
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