Definition
To make a strenuous effort or struggle fiercely to achieve something desired.
努力爭取
Despite the intense competition, they fought tooth and nail to secure the contract.
儘管競爭激烈，他們竭盡全力確保合約。
The residents fought tooth and nail to protect their community center when the government tried to close it.
當政府試圖關閉社區中心時，居民們竭盡全力保護它。
In court, the lawyer fought tooth and nail to prove his client's innocence.
在法庭上，律師竭盡全力證明他客戶的無罪。