yì
wù
1
duty
2
obligation
3
volunteer (work etc)
义务工作是一种无偿的奉献。
Doing volunteer work is a selfless contribution.
作为公民,我们有义务遵守法律。
As citizens, we have an obligation to abide by the law.
担任这个职位意味着有很多责任和义务
Taking on this position means having many responsibilities and obligations.
我们都有保护环境的义务
We all have a duty to protect the environment.
我们都有义务为环保出一份力。
We all have an obligation to contribute to environmental protection.
孩子们的义务是读书和做家务。
The children's responsibilities are to study and do household chores.