A charity measured what a printed date costs: a quarter of Canada's avoidable food waste, C$12 billion a year, and a queue at the food bank that keeps getting longer
【1】At a food bank in Toronto the queue now stretches around the block: one in ten residents of the city is being fed by it.Two miles away, a supermarket is pulling perfectly good yogurt off the shelf because a printed date has arrived, and both scenes belong to the same food system.
【2】A report published in May by Second Harvest, a Toronto food-rescuecharity, put a number on that second scene.Nearly a quarter of Canada's avoidable food waste — about 1.6 million tonnes, worth more than C$12 billion — is linked not to spoiled food but to the way dates are printed and read.
今年五月，多伦多食物救援慈善机构 Second Harvest 发布的一份报告，给第二幕算出了一个数字：加拿大可避免的食物浪费中，接近四分之一——约 160 万吨、价值超过 120 亿加元——与食物变质无关，而与日期怎么印、怎么读有关。
【3】The confusion begins with two phrases that look interchangeable and are not.A "best before" date describes quality: after it, the yogurt may lose texture or taste, but it has not become dangerous.A "use by" or expiry date describes safety, and in Canada only five categories of food — infant formula, meal replacements and a few medical diets — are actually required to carry one.
【4】Consumers, however, read both as a verdict.A survey of 1,507 shoppers in six countries found that those who understand the difference throw away unopened food 30 per cent less often.Yet knowing is not doing: a fridge that is never rotated can raise waste by up to 160 per cent.
【5】Retailers are not much better, and their reasons are rational rather than careless.Pulling stock early protects a store from complaints, bad publicity and legal risk, so the cost of the doubt is quietly transferred from the shelf to the household.
【6】Some governments have decided that the labels themselves are the problem.California will ban the phrase "expires on" from July 2026 and standardise two clearer terms, while Britain lets retailers drop "best before" on long-life goods and South Korea has moved towards dates that reflect real shelf life.
【7】What makes the waste so strange is that the date is not a fact about the food at all.It is a conservative estimate, fixed at packaging, of how long a product keeps its best quality under conditions the packager cannot see.Treated as a deadline, it turns a guess into an instruction, and a decision that belongs to the senses — look, smell, taste — into one that belongs to a printer.
【8】None of this requires heroism, only design.Clearer wording, a discount shelf for food near its date, first-in-first-out rotation and a note on the jar when it was opened can together rescue more than half of what is now thrown away, and Italy shows that tax incentives can move the same food towards charities instead of bins.
【9】The date on the packet was invented to protect us, and it has done that.The task now is smaller and harder: to stop treating a suggestion as a sentence, and to let thirty seconds of looking, smelling and tasting decide what a printed number never could.
原文出处：本文据 Global News 2026 年 5 月 13 日《'Best before' date labels behind $12B in waste as food bank demand spikes》（Prisha Dev 报道，引述 Second Harvest 首席执行官 Lori Nikkel、Daily Bread Food Bank 首席执行官 Neil Hetherington 与 Food for Life 的 Meaghan Richardson）及 Second Harvest《Date Coding and Food Waste Research Report》（2026）公开内容，并参照 SISTERS 项目六国 1,507 名消费者调查数据改写整理，供学习使用。
三、长难句分析（三步拆解法）
A "use by" or expiry date describes safety, and in Canada only five categories of food — infant formula, meal replacements and a few medical diets — are actually required to carry one.
主干：A "use by" or expiry date describes safety（主谓宾，前半句给出定义）
并列分句：and ... only five categories of food ... are required to carry one（被动语态；one 替代前面的 a date，避免重复）
破折号插入语：— infant formula, meal replacements and a few medical diets —（三项列举，解释 five categories 具体是哪些，读到破折号先跳过不影响主干）
only 的位置：only 修饰 five categories，暗示"少得令人意外"——这是全文论证的关键：绝大多数食品并没有法定"过期日"
考点：one 的替代用法；插入语不影响主谓一致；only + 数量词的强调；be required to do 的被动
California will ban the phrase "expires on" from July 2026 and standardise two clearer terms, while Britain lets retailers drop "best before" on long-life goods and South Korea has moved towards dates that reflect real shelf life.
主干：California will ban ... and standardise ...（两个并列谓语，同属"加州要做什么"）
while 对比分句：while Britain lets retailers drop ... and South Korea has moved towards ...（while = 而、与此同时，引出另外两个国家的做法；内部又是两个并列分句）
定语从句：that reflect real shelf life（修饰 dates；reflect 意为"反映"，说明新标注更贴近真实而非保守估计）
Treated as a deadline, it turns a guess into an instruction, and a decision that belongs to the senses — look, smell, taste — into one that belongs to a printer.
主干：it turns A into B, and C into D（turn ... into ... 的两次使用，第二次承前省略了 turns 与 into 之外的成分）
过去分词作状语：Treated as a deadline（= When it is treated as a deadline，逻辑主语是 it，即 the date）
两个名词的对照：a guess → an instruction；a decision that belongs to the senses → one that belongs to a printer（one 替代 a decision，避免重复）
破折号列举：— look, smell, taste —（三个动词原形并列，具体说明 the senses；省略 and，形成急促的节奏）
考点：过去分词作条件状语；turn A into B 的平行；one 的替代；破折号插入列举；belong to 的归属表达
The task now is smaller and harder: to stop treating a suggestion as a sentence, and to let thirty seconds of looking, smelling and tasting decide what a printed number never could.
主干：The task now is smaller and harder（主系表；两个比较级并列，制造"看起来容易、其实更难"的张力）
冒号后的两个不定式：to stop treating ... and to let ... decide ...（用两个不定式把"任务"具体化为两个动作）
let 复合宾语：let thirty seconds ... decide what ...（let sb/sth do sth，decide 前省略 to）
宾语从句：what a printed number never could（could 后省略了 decide，形成"印刷数字永远决定不了的事"这一留白）
误会的起点是两个看起来可以互换、其实完全不同的短语。best before（最佳食用日期）讲的是品质：过了这一天，酸奶可能失掉口感、风味或营养，但它并没有变得危险。use by 或 expiry（有效期至）讲的是安全：过了这一天，就不该再吃。关键的事实是——在加拿大，真正被强制要求标注"过期"的只有五类食品：婴儿配方奶粉、代餐、蛋白棒，以及两种处方食品。也就是说，超市货架上绝大多数商品上的那行日期，法律上只是品质建议，而不是安全红线。
零售端也有自己的算法，而且相当理性。提前把临期商品撤下，可以让门店躲开投诉、差评与潜在的法律责任——毕竟没有一家超市愿意因为"卖了快过期的东西"上新闻。问题在于，这份"不确定"的成本并没有消失，它只是被悄悄从货架转移到了家庭和食品银行。报告因此指出，加拿大的日期标注体系已经落后于一批同类国家：加州统一了 "best if used by" 与 "use by" 两种说法，并从 2026 年 7 月起禁用 "expires on"；英国允许零售商在长保质期商品上自愿取消 best before；澳大利亚把日期标签写进了国家减少食物浪费战略；韩国则从保守的 best before 转向更贴近真实货架期的 use by。
仿写题：仿照第 7 段 "Treated as a deadline, it turns a guess into an instruction, and a decision that belongs to the senses — look, smell, taste — into one that belongs to a printer."（先用过去分词短语设定条件，再用 turn A into B 的两次平行把"猜测→指令""感官→机器"并置，中间用破折号插入三项列举），就"把算法推荐当成兴趣本身"写一句你自己的判断句。
