fight tooth and nail
US /faɪt tuθ ænd neɪl/
UK /faɪt tuθ ænd neɪl/
1.
竭盡全力, 拼命鬥爭
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.
在經濟衰退期間，他們不得不竭盡全力維持生意。
•
She will fight tooth and nail for her children's rights.
她將竭盡全力爭取孩子們的權利。