fight tooth and nail
全力拼博
In our civilized, modern life, we use our teeth for eating only, and our fingernails and toenails are used hardly at all, except for decoration. Among animals, however, teeth and nails are often used to collect food or catch prey. More aggressive animals, such as tigers and bears, use teeth and nails to attack other creatures or defend their territory. If attacked themselves, they will fiercely "fight tooth and nail" to avoid being wounded or captured.
在現代文明生活中,我們只用牙齒吃東西,但是手指和腳趾卻鮮有派上用場的時候,除了用來裝飾。然而動物則經常使用牙齒和指甲來采集食物或者追捕獵物。攻擊性更強的動物,例如老虎和熊,則用牙齒和指甲攻擊其它動物或者保衛自己的領土。如果自身被攻擊,它們會拼命用牙齒咬,揮舞爪子,以避免受傷或者被俘。
From that animal origin, we have imported this idiom into our civilized, modern life to represent any situation where we humans feel we must fight aggressively for some cause or purpose. It does not mean to fight physically, as animals do, but to fight verbally using ideas and arguments.
從動物身上,我們將這一習慣用語引入到文明的現代化生活中,來表示我們人類為了某些原因或目的,去全力拼搏的情況。不一定是像動物一樣來肉搏,而是指用各種想法和爭論,從言語上力拼到底。
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