麦当劳并不是唯一在放慢速度的，其他连锁店的“免下车”服务速度也在放慢。
McDonald's wasn't alone in slowing down, other chains also saw their drive-through performance slow down.
服务速度变慢的原因有：如今菜单上的选择更多了，而且产品本身也更复杂，准备时间更长。
Among the reasons for the slower service, today there are more choices on the menu, and the products themselves are more complex and take longer to prepare.
您现时正使用的宽频服务速度？
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