No. 4,515 in Chinese
有效期
"有效期" means "validity period" or "expiration date."
In a sentence
药品的有效期是三年。
The expiration date of the medicine is three years.
The term '有效期' is used to denote the expiration date or validity period for consumable items like medicine.
会员卡的有效期到年底。
The membership card is valid until the end of the year.
Here, '有效期' refers to the validity period for the membership card, indicating the duration for its usability.
护照的有效期已过，需要更新。
The passport's validity period has expired and needs to be renewed.
In this case, '有效期' describes the duration for which an official document like a passport remains valid.
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