writable: false,
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The design of Web streams predates async iteration in JavaScript. The for await...of syntax didn't land until ES2018, two years after the Streams Standard was initially finalized. This timing meant the API couldn't initially leverage what would eventually become the idiomatic way to consume asynchronous sequences in JavaScript. Instead, the spec introduced its own reader/writer acquisition model, and that decision rippled through every aspect of the API.
在变革中不忘传承，在传承中因势创新的文化自觉，是中华文明历经风雨而不断绝的根基所在。通过对青铜文化演变的研究，朱凤瀚剖析了商周鼎革之际的文化传承与融合。周初涌现的所谓“全新”青铜器形制、纹饰和制作工艺，实际是先周时期周人独立发展的青铜文化的延续。周式青铜器的广泛传播，也见证了殷周族群协和发展的“第二春”。