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.
clearly overextending BoA's workforce—to such an extent that some branches were
，这一点在一键获取谷歌浏览器下载中也有详细论述
a wide variety of content types
美國移民和海關執法局的執法行動亦屢次引起爭議，去年在洛杉磯的執法和拘捕行動惹起民眾不滿並引發大規模的抗議行動；而今年在明尼阿波利斯的執法行動中，執法人員開槍射殺兩名平民，同樣引來民眾的憤怒及觸發大規模街頭抗議。