Right now, US inventories held by manufacturers, wholesalers, and retailers are valued at around $1.7 trillion – or about 10% of annual GDP. This includes many things that cannot be 3D-printed (anytime soon, at least), but it does hint at how much stuff is just sitting around.
眼下，美国生产商、批发商和零售商建立的库存估值在1.7万亿美元左右，或年GDP的10%。这其中包括了许多不能3D打印的东西（至少在近期不能），但也确实反映了有多少东西屯着。