无担保的债券

无的英语翻译：

naught; nonexistence; not; nothing; without; lack; zero
【医】 a-; leipo-; lipo-; non-

担保的英语翻译：

guarantee; assure; ensure; vouch; warrant
【经】 assurance; backing; bail; endorsement; guarantee; hypothecate
warranties

债券的英语翻译：

bond
【经】 bond; bond certificate; debenture; debenture certificate
debt obligations; evidence of debt; loan stock; redemption of bonds
t-bond