快餐连锁店麦当劳的员工轮换率在所有行业中是最高的。

Fast food chains like McDonalds have one of the highest employee turnover rates of any industries.

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从菜单上餐品价格的无情上涨来看，大型连锁店在比萨上的毛利率肯定至少达到80%，也就是400%的成本利润率。

Given the way menu prices have risen relentlessly, the major chains must enjoy gross margins of at least 80 per cent on their pizza, or a mark-up of 400 per cent over cost.

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这一研究可以用来解释为何肥胖率不断攀升以及快餐连锁店生意兴隆。

The findings could explain soaring obesity rates and the success of fast food outlets.

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