Definition
To make a strenuous effort or struggle fiercely to achieve something desired.
努力争取
Despite the intense competition, they fought tooth and nail to secure the contract.
尽管竞争激烈，他们竭尽全力确保合同。
The residents fought tooth and nail to protect their community center when the government tried to close it.
当政府试图关闭社区中心时，居民们竭尽全力保护它。
In court, the lawyer fought tooth and nail to prove his client's innocence.
在法庭上，律师竭尽全力证明他客户的无罪。