来自《耶鲁大学开放课程：金融理论 第9集 第9集》
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where there can't be any default--at least,他们不会违约 -
that's what they always used to say--至少他们过去常这么说 -
can't be any default on an American promise.对美国民众承诺自己不会违约 -
America's government never broke a promise and they can美国政府不必违约因为他们可以 -
always print the money, so presumably they don't have随意印钱 因此假定他们不会违约 -
to break a promise-- so they're just promising money因为他们可以用印出的钞票付款 -
which they can print, so why should they ever break他们又何必违约 -
their promise-- so what would you find if you那你在报纸中将会 -
opened a newspaper?看到什么 -
You would find, for different maturities--你会发现对于不同的国库券 -
it used to be up to 30 years--for different maturities,它最长期限曾可达30年 -
you would find the yield on the various bonds,你将发现对于不同债券的收益率