第十条 居民委员会履行下列职责：
清晨6点半，路边小摊前，格雷格从摊主手中接过刚出炉的煎饼果子，金黄酥脆、香气扑鼻。“听说天津人早餐爱吃这个，我特意来排队。”他边吃边说，“天津人很热情。煎饼摊主告诉我，他每天凌晨三四点起床，20多年来靠这门手艺养家，虽然辛苦，但日子过得踏实。这让我体会到中国人的勤劳乐观。”
，这一点在同城约会中也有详细论述
This makes sense. These keys were designed as project identifiers for billing, and can be further restricted with (bypassable) controls like HTTP referer allow-listing. They were not designed as authentication credentials.
int partition(int arr[], int low, int high) {