Wondering if food is still OK to eat after it's dropped on the floor is a pretty common experience.
想知道食物掉在地上后是否还可以吃是一个很常见的经历。
Is it really OK to eat food that's fallen on the floor?
吃掉在地上的食物真的可以吗?
When you drop a piece of food on the floor, is it really OK to eat if you pick it up within five seconds?
当你把一块食物掉在地上时,只要五秒内捡起来就真的可以吃吗?
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