【挂牛头卖马肉 horsemeat being sold as beef】最近在欧盟各国备受关注的"马肉门"事件(horsemeat scandal)说的是欧洲多个国家超市出售的processed beef foods(加工类牛肉食品)中含有马肉成分，即大家所说的“horsemeat being sold as beef”，涉及的食品多是ready-to-eat frozen meals(冷冻熟食)。
