noncallable       
adjective  finance & economics specialized (also non-callable) uk/ˌnɒnˈkɔː.lə.bəl/ us/ˌnɑːnˈkɑː.lə.bəl/
 不可赎回的
If a loan (= borrowed money) is noncallable, the organization that lends the money cannot ask for it to be paid back before the end of a certain time
  Long-term government noncallable bonds pay 8%.
 an issue of 7.5% non-callable notes 发行7.5%的不可赎回票据 
 - More examples
 - The issuer of a noncallable bond will pay interest at the stated rate for the bond's full term.
 - Because the bond is noncallable, the issuer cannot redeem it before the stated maturity date.
 - The company has issued $250 million of ten-year 6.5% notes, non-callable for life.