券 (quàn) means “bond (esp. document split in two, with each party holding one half); contract; deed (i.e. title deeds); ticket; voucher; certificate”. It is an HSK 6 Chinese character in the HSK 3.0 vocabulary.
这张优惠券明天就过期了。
Zhè zhāng yōuhuìquàn míngtiān jiù guòqī le.
This coupon expires tomorrow.
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