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expiration date of [noun]
Check the expiration date of the medicine.
检查药品的有效期限。
有效期；失效日期
先理解核心含义，再看它在真实句子里的用法。
有效期；失效日期
A date by which an object either should not be used or loses its value, depending upon the item.
Check the expiration date of the medicine.
检查药品的有效期限。
某物品不应再使用或失去价值的日期,具体取决于物品类型。
A date by which an object either should not be used or loses its value, depending upon the item.
Always check the expiration date on food packaging before buying.
购买前一定要检查食品包装上的保质期。
My credit card's expiration date is next month, so I need to request a new one.
我的信用卡下个月到期，所以需要申请一张新的。
The coupon has passed its expiration date and can no longer be used.
这张优惠券已过有效期，无法再使用。
Check the expiration date of the medicine.
检查药品的有效期限。
常见动词有 check, verify, see, look at 等。
Please verify the expiration date before purchase.
购买前请核实截止日期。
The expiration date is March 15, 2025.
有效期限是2025年3月15日。
Do not use the product after the expiration date.
过期后请勿使用该产品。
Not this
The expire date is tomorrow.
Use this
The expiration date is tomorrow.
学习者误将动词expire当作名词使用，应使用名词短语expiration date作主语。
Not this
The deadline of this milk is March 1st.
Use this
The expiration date of this milk is March 1st.
deadline常用于任务截止时间，而expiration date指物品的有效期限，尤其是食品或药品，此处应使用expiration date。
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页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.