[词语]tooth and nail
[含义]又咬又抓;拼死斗争;猛烈搏斗
[趣释]【物象喻指】有些动物不但牙齿(tooth)厉害,其爪子(nail)也如刀锋一般,如虎、猫、狗之类,一旦被逼到绝境,它们肯定会用牙和爪作背水一搏(试读)...