// 条件解读：栈非空 + 栈顶当前数 + 还有删除名额 → 弹出栈顶（移除大数）
Detection is via allocating a slice of zeroed memory, in our case a gigabyte, and then once per minute going through to ensure they're actually all zeroes. Magic!
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Антонина Черташ
让纳泽最有感触的，是移动支付带来的便利。他下载、注册支付宝APP，绑定境外银行卡，一定额度内的消费不用验证身份，“在街边小店吃烧腊、买咖啡，都能扫码支付，太方便了。”
"I think of my donor and her family every day and pray they find some peace in knowing their daughter gave me the biggest gift: the gift of life," Bell said.