She pointed out that irradiated beef was offered at many grocery stores nationwide at the beginning of the decade but it did not last long.

她指出前十年辐照牛肉在全国很多杂货店都有出售，但这并没有持续多长时间。

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Plants have long been selected by nature and bred by humans or irradiated to create mutants with enhanced resistance or tolerance to external threats to their survival and productivity.

FORBES: Back To The Future: Let's Reverse 25 Years Of Flawed Agbiotech Regulation