tall order
【原文】But the weak iPhone sales at Leap indicate that weaning customers off of subsidies will be a tall order, even though buying phones at full price is common in Europe and elsewhere.
【単語の意味（日本語）】
無理な注文
But the weak iPhone sales at Leap indicate that weaning customers off of subsidies will be a tall order, even though buying phones at full price is common in Europe and elsewhere.