同样重要的是，麦当劳近期进行的过度菜单多样化导致客户等待时间延长。然而，快餐业是速度优先的行业。

Just as crucial, too much menu diversification, which McDonald's has suffered from of late, leads to longer customer wait times in an industry built on speed.

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尤其是餐饮业如汉堡店，他们销售的汉堡的利润很小，但利润主要来源于汉堡套餐中的奶昔和菜单上的油炸食品。

A burger joint makes very little on the burger. Their profit is found in the milkshakes and fries added to the order.

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