B2 [ C or U ] the fact that you are obliged to do something义务;责任;职责
[ C ] something that you must do必须要做的事情
More examples
Beach operators do not have a legal obligation to provide against injury or drowning.
One has an obligation to one's friends.
It's her moral obligation to tell the police what she knows.
Are you under a contractual obligation to any other company?
You have a legal obligation to inform the police about the crash.
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