Expiration date 什么意思呢

产品有效期

expiration date[英][ˌekspɪˈreɪʃɵn deit][美][ˌɛkspəˈreʃən det]
n.截止日期; 产品有效期;

例句:
1.
By now, they are likely well past their expiration date.
现在这些安全套可能早已过了保质期。

2.
Two factors are driving the speculation that the system could be approaching its expiration date.
两个因素使人猜测这项制度可能即将寿终正寝。