(因责任、义务而)必须做的;有义务去做的;责无旁贷的。(常用于正式语境,强调道德或职责上的约束。)
/ˈduːti baʊnd/
I felt duty-bound to tell her the truth.
我觉得自己有义务把真相告诉她。
Duty-bound by his oath and the expectations of his community, he stayed to help even when leaving would have been easier.
受誓言和社区期望的约束,他责无旁贷地留下帮忙,尽管离开会更轻松。
duty-bound 由 duty(责任、义务) + bound(被束缚的、受约束的) 组合而成。这里的 bound 表示“被某种规则或承诺所约束”,合起来强调“因责任而被约束、必须履行”。