tooth是“牙齿”的意思，nail是“指甲”的意思，fight是“斗争、搏斗、奋斗”的意思，难道这个短语是“用牙齿和指甲搏斗”的意思？Many animals have teeth and nails.
They should know better than to bite the hand that feeds them. There is no way to get away with this.
据英国《金融时报》16日报道，加拿大能源部长、新任总理热门人选乔纳森·威尔金森向美国发出警告，若美国对加拿大产品加征关税，加拿大将“以牙还牙”（tit-for-tat）。去年11月，美国当选总统特朗普表示，自己上台后将对墨西哥和加拿大进入美国的所有产品征收25%关税。
In order to resolutely safeguard national sovereignty， dignity and core interests and oppose Western hegemonism and power politics， the Chinese government has launched multiple corresponding countermeasures against entities and individuals of relevant countries since the beginning of 2021.It's paying them back in their own coin.
英语中有许多单词或短语的发音说出来特别有带感，平时多注意挑这些词儿来练练嘴皮子，保准你的自信心能噌噌地涨起来！得嘞，今儿个就给大家说一个这样的例子----Fight fire with fire！怎么样，是不是读起来就感觉特别有力量！
ADJ If you take retaliatory action， you try to harm or annoy someone who has harmed or annoyed you. 报复性的;我的出轨不过是种报复。转载《有道词典》，如有侵权请通知删除。
