化学家们确实发现了少量残留的三种可疑的化学物质，但他们指出这些化学物质在所有罐头食品中都会自然产生。
The chemists did find small amounts of the three remaining suspected chemicals but pointed out that these occur naturally in all canned foods.
你应该知道的其他区域是冷冻食品和罐头食品区域。
The other sections you should get to know are the frozen foods and the canned goods.
罐头食品则是浪费最少的。
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