五分钟后，他带着面包、一瓶牛奶和三卷纸巾回来了。

Five minutes later, he's back with the bread, a bottle of milk, and three rolls of paper towels.

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这意味着人们应该避免把烤土豆炸脆，拒绝薄皮披萨，只烤面包的一部分。

This means that people should avoid crisping their roast potatoes, reject thin—crust pizzas and only partially toast their bread.

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五分钟后，我们将培根或面包放在表面5秒、30秒或60秒，然后检测转移到食物上的细菌数量。

Five minutes after that, we placed either bacon or bread on the surface for 5, 30 or 60 seconds, and then measured the number of bacteria transferred to the food.

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