We wanted to know if the length of time food is in contact with a contaminated surface affected the rate of transfer of bacteria to the food.

我们想知道食物与被污染的表面接触的时间长短是否会影响细菌转移到食物上的速度。

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The shaft drilled for the probe that made contact can be used to send them food, clean water and medicine. But rescue workers still have to decide how to bring back them to the surface.

那个之前钻好用来放置探针进行交流的通道现在可以被用来往矿下递送食物，清洁的水和药物，但是如何将他们带上地面仍是一个问题。

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Any surface of equipment, utensil, packaging, etc. that normally comes into contact with food.

食品接触表面：如设备、炊具、包装表面等与食品直接接触的表面。

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