obligation

柯林斯詞典

1. N-VAR If you have an obligation to do something, it is your duty to do that thing. 義務(wù)
When teachers assign homework, students usually feel an obligation to do it. 老師布置家庭作業(yè)時，學(xué)生們通常感覺做作業(yè)是一種義務(wù)。
2. N-VAR If you have an obligation to a person, it is your duty to take care of them or protect their interests. 義務(wù); 責(zé)任
The United States will do that which is necessary to meet its obligations to its own citizens. 美國會盡其對國民應(yīng)盡的義務(wù)。
3. PHRASE In advertisements, if a product or a service is available without obligation, you do not have to pay for that product or service until you have tried it and are satisfied with it. 無義務(wù)地
If you are selling your property, why not call us for a free valuation without obligation. 如果你打算出售房產(chǎn)，為什么不打電話讓我們做個免費的評估呢。

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 .