sell-by-date销售限期;出售截至日期
was past its sell-by date过期
past its sell-by date过期的;过期
be past its sell-by date过了保质期
past one's sell-by date超过有效期限
N-COUNT（可数名词） The sell-by date on a food container is the date by which the food should be sold or eaten before it starts to decay. 最迟销售日期
...a piece of cheese four weeks past its sell-by date.
…一块超过最迟销售日期4个星期的奶酪。