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保质期 (bǎozhìqī) is a commonly used term in Chinese conversations, especially when discussing the expiration date or validity period of a product. It is often used in the context of food, medicine, and other perishable items.
For example, when buying groceries, one might ask the store clerk "这个牛奶的保质期是多久？" (Zhège niúnǎi de bǎozhìqī shì duōjiǔ?) which means "How long is the expiration date for this milk?" In this case, the person is inquiring about the length of time the milk can be safely consumed.
Similarly, when purchasing medication, one might ask "这种药的保质期还有多久？" (Zhè zhǒng yào de bǎozhìqī hái yǒu duōjiǔ?) which means "How much longer is the validity period for this medicine?" This question is asking about the remaining time before the medication expires and becomes ineffective.
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