// 栈的长度 = 独立车队数量
Source: Computational Materials Science, Volume 266
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回到乡镇，不仅是空间的转移，人似乎也变成最乡野的模样。
This overhead is mandated by the spec's reliance on promises for buffer management, completion, and backpressure signals. While some of it is implementation-specific, much of it is unavoidable if you're following the spec as written. For high-frequency streaming – video frames, network packets, real-time data – this overhead is significant.