短期国库券发行期限有三种。

Treasury Bills are issued in three maturities.

youdao

长期国库券通常发行期限为30年，并且每年付息两次。

Treasury Bonds are usually issued in thirty-year maturities, and pay interest twice a year.

youdao

债券是对在规定日期偿还所借的钱并付利息的承诺，发行期限在一年以上。

A bond is a promise to repay borrowed money in addition to paying interest on specified dates and is issued for a period of more than a year.

youdao

So we have--U.S. Government issues bills and that's less than or equal to one year and they pay no interest.

美国政府发行的短期国库券,期限通常小于或等于一年,且不付息

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