Yet spoiled food not only creates health risks but also economic losses.
然而变质的食物不仅仅会对健康造成危害,而且也会造成经济损失.
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People has been using silver as containers to preserve food thousands years before.
几千年前,人们便开始使用银制容器来储藏和保存食品,防止细菌引起的变质。
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Maybe there will be ways to preserve our food so that bread never goes stale.
也许,会有防止我们的食物变质的办法来使面包保持原味。
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糖之所以能杀灭会令食物变质的细菌,并不是因为它有毒,而是高浓度的糖让细菌渴死了。
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