My mother's food coupons will go to the British Museum as I have promised.
我已经答应把母亲留给我的粮票捐赠给大英博物馆。
I want to use these coupons. Have they expired?
我想要用这些优惠券。它们过期了吗？
Finally, I just want to say that we have also a kind of bond called an indexed bond, which is a bond whose coupons are indexed to inflation.
最后一点是，一种叫物价指数债券的债券，这种债券的票息被通胀指数化了。
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