Title Text:I am firmly of the opinion that if something doesn’t have a year on it, every time the expiration date rolls around it is good again for the two weeks preceding that date. Origin:https://xkcd.com/737/ https://www.explainxkcd.com/wiki/index.php/737:_Yogurt 酸奶 https://www.douban.com/photos/photo/754548167/ 儒略历和格里高利历 大多数包装食品的失效日期表明食品可能不再适合食用。这可能是由于多种原因造成的;大多数产品在有效期过后会腐烂或长霉……