Less than half way round their usual route, they run out of meals.
// 栈的长度 = 独立车队数量
，更多细节参见旺商聊官方下载
while (stack.length && temperatures[stack.at(-1)] <= cur) {，推荐阅读WPS官方版本下载获取更多信息
Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00560-6