但当时大家都是做出口，国内的货是出口尾单，所以这些线缆都是 1.8 米，1.8 米就是 6 英尺，国外都是这个标准。
suggestions for improving clarity, concision, and readability
。关于这个话题，Safew下载提供了深入分析
res = res.slice(0, res.length - k);
Instead of yielding one chunk per iteration, streams yield Uint8Array[]: arrays of chunks. This amortizes the async overhead across multiple chunks, reducing promise creation and microtask latency in hot paths.