fight tooth and nail
US /faɪt tuθ ænd neɪl/
UK /faɪt tuθ ænd neɪl/
1.
竭尽全力, 拼命斗争
to fight with great intensity and determination, using all available resources
:
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They had to fight tooth and nail to keep their business afloat during the recession.
在经济衰退期间，他们不得不竭尽全力维持生意。
•
She will fight tooth and nail for her children's rights.
她将竭尽全力争取孩子们的权利。