Ultimately, the most rigorous traceability solutions, including QR codes and microchips, won't be useful if people don't actually check them as a condition of making their purchases. Imitators can simply counterfeit QR code labels, for example.
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，详情可参考旺商聊官方下载
Что думаешь? Оцени!，这一点在im钱包官方下载中也有详细论述
“形式主义少一些、真抓实干多一些，矛盾也会少一些，实绩也会多一些。”
// 倒序遍历2*len-1次：模拟数组循环（核心！易错点1）