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.
TL;DR: Lego is running Star Wars make and take events on March 8. A limited quantity of Lego Star Wars Lightsabers will be available for free at participating stores.。PDF资料是该领域的重要参考
，这一点在WPS下载最新地址中也有详细论述
print u"\u001b[44;1m A \u001b[45;1m B \u001b[46;1m C \u001b[47;1m D \u001b[0m"
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