形容詞 bounden:

1. morally obligatory

1. It's not a case of whether Enid wants to give evidence or not. If she overheard a criminal conversation, it's her bounden duty to report it to the police.
   現(xiàn)在的問(wèn)題不是伊妮德是否愿意作證。假如她偶然聽到罪犯的談話，那么，向警方報(bào)告是她義不容辭的責(zé)任。

bound.en

adj.（形容詞）
Obligatory:
有義務(wù)的：
例句：
their bounden duty.
他們應(yīng)盡的義務(wù)

Archaic Being under obligation; obliged.
【古語(yǔ)】 有義務(wù)的；應(yīng)當(dāng)?shù)?/br>
來(lái)源：
Middle English [past participle of] binden [to bind]
中古英語(yǔ) [] binden的過(guò)去分詞 [約束]
from Old English bindan * see bind
源自 古英語(yǔ) bindan *參見(jiàn) bind