保质期用英语怎么说？

 　　近日，新闻媒体曝光了肯德基、麦当劳、必胜客等洋快餐的供应商上海福喜食品公司使用过期劣质肉的事件。该公司将落地肉直接上生产线，各种过期原料随意添加。

　　Shanghai has shut a food production factory for allegedly selling out-of-date meat to restaurant giants including McDonald's and KFC.

　　上海关闭了一家涉嫌向麦当劳、肯德基等快餐店供应过期肉的食品加工厂。

　　“过期肉”可用out-of-date meat或expired meat表示，指的就是过了保质期的肉制品。

　　英语口语：保质期用英语怎么说？

　　英语里有关“保质期”的说法常见的有三种，分别为use by, best before和display until，每个的侧重点不同。

　　'Use by' means¹ exactly that. You shouldn't use any food or drink after the end of the 'use by' date shown on the label². Use by指“最后食用期限”，过了这个日期以后产品性质会发生变化，不适宜再食用。

　　'Best before' dates are usually used on foods that last longer, such as frozen³, dried or canned foods. It should be safe to eat food after the 'best before' date, but the food will no longer be at its best. Best before多用于速冻、干货或罐头食品，指过了这个期限后口感和味道可能会发生变化，但依旧可以安全食用。

　　'Display until' and 'sell by' dates are instructions for shop staff to tell them when they should take a product off the shelves. Display until或sell by则是给销售人员看的，到了这个日期后就该把产品从货架上撤下来了。

1 means   

n.方法，手段，折中点，物质财富

参考例句：

• That man used artful means to find out secrets.那人使用狡猾的手段获取机密。
• We must get it done by some means or other.我们总得想办法把它干完。

2 label   

n.卷标，标签，标记；称号，绰号；v.贴标签于，把…称为

参考例句：

• The label is on the inner side of the box.标签贴在盒子内侧。
• He has been given the label of "playboy".他被起了个“花花公子”的绰号。

3 frozen   

adj.冻结的，冰冻的

参考例句：

• He was frozen to death on a snowing night.在一个风雪的晚上，他被冻死了。
• The weather is cold and the ground is frozen.天寒地冻。