只的英語翻譯：

merely; nothing but; only; single

登記的英語翻譯：

register; book; check in; enroll; enregister; inscribe
【計】 journaling; log-in; registration
【醫(yī)】 register; registration
【經】 book the order; enrollment; keeping of record; recordation; register
registration; registry

本金的英語翻譯：

capital; corpus; principal
【經】 corpus

債券的英語翻譯：

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