obligation
Definition
A duty or commitment that one is bound to fulfill, either legally or morally.
中文 必须履行的义务或承诺，可以是法律上的或道德上的。
Example
"Volunteering is not an obligation, but a choice."
A duty or commitment that one is bound to fulfill, either legally or morally.
中文 必须履行的义务或承诺，可以是法律上的或道德上的。
"Volunteering is not an obligation, but a choice."