英语语法分析

The expiration date on this yogurt was November 20.

这酸奶的有效期到11月20日。

《牛津词典》

But soda past its expiration date goes flat and loses much of its taste.

但是过期的苏打水跑气，味道也会大打折扣。

《柯林斯英汉双解大词典》

Then he proceeded to recite his card number and expiration date before signing off.

接着他开始背诵他的卡号和有效期，然后才签字。