She said she was going to fight tooth and nail to keep this house for her daughters.

她说她要为女儿们竭尽全力地保住这栋房子。

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If attacked themselves, they will fiercely "fight tooth and nail" to avoid being wounded or captured.

如果受到攻击，它们将会凶猛的拼命反击，避免受伤或是被抓。

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Last and perhaps most surprising of all, chocolate may fight tooth decay more effectively than fluoride.

最后也是最让人吃惊的一点是，巧克力防止蛀牙的作用可能比氟化物更有效。

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I'm going to fight tooth and nail to keep my job as mayor.

BBC: Toronto Mayor Rob Ford ordered to step down

Gulf employers have got accustomed to using cheap labour and they are ready to fight tooth and nail to keep it.

ECONOMIST: Gulf citizen, no qualifications, seeks well-paid job

"Unfortunately, we don't have an activist in every corner of the country to fight tooth and nail for the safety of children, " Owens says.

CNN: Children face danger in the schoolyard grass from pesticides