The chain's burgers can resistrot for years. Scientists explain why they have the shelf life of the undead.
麦当劳出售的汉堡包放上几年也不会腐烂，科学家们解释了其中的原因。
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Although the manganese treatment could not resist PPO activity obviously, decreased the contend of total hydroxybenzene, thus reduced the incidence of fruit rot and brown.