Usage note
保质期表示食物或商品可以安全使用的时间。
bǎo zhì qī biǎo shì shí wù huò shāng pǐn kě yǐ ān quán shǐ yòng de shí jiān。
保质期 means the period during which food or goods can be safely used.
Context note
保质期常用于食品、药品和包装。
bǎo zhì qī cháng yòng yú shí pǐn 、 yào pǐn hé bāo zhuāng。
It is often used for food, medicine, and packaging.
5 examples
请看保质期。
qǐng kàn bǎo zhì qī。
Please check the expiration date.
这个牛奶还在保质期内。
zhè ge niú nǎi hái zài bǎo zhì qī nèi。
This milk is still within the shelf life.
保质期过了就不能吃了。
bǎo zhì qī guò le jiù bù néng chī le。
If the shelf life is over, it cannot be eaten.
包装上写着保质期。
bāo zhuāng shàng xiě zhe bǎo zhì qī。
The packaging shows the shelf life.
买东西时要注意保质期。
mǎi dōng xī shí yào zhù yì bǎo zhì qī。
When buying things, pay attention to the shelf life.
5 mini stories
妈妈检查了食物的保质期。
mā ma jiǎn chá le shí wù de bǎo zhì qī。
Mom checked the food's shelf life.
这盒饼干还在保质期。
zhè hé bǐng gān hái zài bǎo zhì qī。
This box of biscuits is still within the shelf life.
他把过期的东西扔掉了。
tā bǎ guò qī de dōng xī rēng diào le。
He threw away the expired items.
老师提醒大家注意保质期。
lǎo shī tí xǐng dà jiā zhù yì bǎo zhì qī。
The teacher reminded everyone to pay attention to the shelf life.
买零食前先看保质期。
mǎi líng shí qián xiān kàn bǎo zhì qī。
Before buying snacks, check the shelf life first.
Mini dialogue
检查牛奶
A
这瓶牛奶的保质期是到什么时候？
Zhè píng niúnǎi de bǎo zhì qī shì dào shénme shíhou?
When is the shelf life of this bottle of milk?
B
我看看，保质期是下周五。
Wǒ kànkan, bǎo zhì qī shì xià zhōu wǔ.
Let me see, the shelf life is next Friday.
买面包
A
买面包前要看一下保质期。
Mǎi miànbāo qián yào kàn yīxià bǎo zhì qī.
Before buying bread, you should check the shelf life.
B
好的，过期的不能买。
Hǎo de, guòqī de bù néng mǎi.
Okay, we can't buy expired ones.
Related words and contrasts
similar
有效期
yǒu xiào qī
validity period
Often used for documents or medicine, while 保质期 is mainly for food.
opposite
过期
guò qī
expired
Means past the shelf life; food is no longer safe to eat.