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一个是L4技术实现有了样板，一个是L4商业试点已有成效。
，这一点在搜狗输入法下载中也有详细论述
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.
输出：[3,1,2,1,1,0]