Food crime mostly goes unreported, so it's difficult to grasp its scale.
Concerns about the wider implications of such a change pulsed through discussions at the World Economic Forum in Davos last month and have contributed to widespread economic anxiety in the US.
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研发人员的数量变动进一步揭示了行业分化的加剧——五年间，10 个行业的研发人员数量出现负增长，且这些行业主要集中在尾部；而以消费电子及电气业、汽车制造业为代表的行业，则大力扩张研发人员规模。
"We hope that this action by Waitrose sends it to the top of the political agenda," he said.