to lead adog's life
形容人過著窮困潦倒、慘不忍睹的生活
dog eat dog
競爭激烈
work like a dog
指一個人努力賣命的工作
sick as a dog
病得很重
let sleeping dogs lie
不要自找麻煩,自討苦吃
dog tired
筋疲力盡
every dog has its days
每個人都有屬于自己的運氣,每個人都有時來運轉(zhuǎn)的一天
meaner than a junkyard dog
冷漠 不友好
you can never teach an old dog new tricks
老人學(xué)不好新東西