二、科室迭代：两家医院，如何跟上老人需求？Sun City的核心医疗力量，就是Banner Boswell和Banner Del E. Webb两家医院。它们的科室和服务，从来不是一成不变的，而是跟着老年人口的需求、技术的进步，从基础到专科、从单一到综合，慢慢迭代升级。
set pixel as candidate
，这一点在91视频中也有详细论述
Фото: Mario Anzuoni / Reuters
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.