obligation

n. /ˌɑːblɪˈɡeɪʃn/ B2

义务；责任

A duty or legal responsibility to do something.

仙境例句

Every juror had an obligation to listen, but Bill the Lizard just looked at the sky.

每位陪审员都有义务认真听，可蜥蜴比尔只顾望着天。