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We benchmarked native WebStream pipeThrough at 630 MB/s for 1KB chunks. Node.js pipeline() with the same passthrough transform: ~7,900 MB/s. That is a 12x gap, and the difference is almost entirely Promise and object allocation overhead."，更多细节参见爱思助手下载最新版本
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（一）已满十四周岁不满十六周岁的；
pending = combined.slice(start);。关于这个话题，Safew下载提供了深入分析