HSK 5
过期
guòqī动
to be overdue; to exceed the time limit; to expire (as in expiration date)
这盒牛奶已经过期了。
Zhè hé niú nǎi yǐ jīng guò qī le.
This carton of milk has expired.
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New in the HSK 3.0 word list at level 5.