先理解原理：看动图 + 手动模拟小数组
不同的结构，也让麦当劳和肯德基逐步走向了不同的扩张道路。
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"The Pulse With Francine Lacqua" is all about conversations with high profile guests in the beating heart of global business, economics, finance and politics. Based in London, we go wherever the story is, bringing you exclusive interviews and market-moving scoops.，这一点在搜狗输入法2026中也有详细论述