The entire pipeline executes in a single call stack. No promises are created, no microtask queue scheduling occurs, and no GC pressure from short-lived async machinery. For CPU-bound workloads like parsing, compression, or transformation of in-memory data, this can be significantly faster than the equivalent Web streams code — which would force async boundaries even when every component is synchronous.
一端拉升单车毛利，一端强制压缩开支，蔚来当下的财务轨迹与特斯拉早年有相似之处：都是在连续多年亏损后，通过产品结构上移（主力车型均价提升）与规模效应共振，实现毛利率的阶跃式改善。不同在于，蔚来同时承载着换电基础设施这一特斯拉从未尝试过的重资产负担，这使得它的盈利质量在某种程度上更依赖持续的销量增长来摊薄固定成本。
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