快递单上那串神秘数字怎么指挥千万包裹?快递单上的神秘数字如何掌控千万包裹的物流
How does that mysterious string of numbers on the express delivery slip direct millions of packages? How does the mysterious number on the express delivery slip control the logistics of millions of packages
以上为机器翻译结果，长、整句建议使用 人工翻译 。