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，向警方報告是她義不容辭的責任。

bound.en

adj.（形容詞）
Obligatory:
有義務的：
例句：
their bounden duty.
他們應盡的義務

Archaic Being under obligation; obliged.
【古語】 有義務的；應當?shù)?/br>
來源：
Middle English [past participle of] binden [to bind]
中古英語 [] binden的過去分詞 [約束]
from Old English bindan * see bind
源自 古英語 bindan *參見 bind