【1+1英文】

Angela: "I can't believe you sold him your motorcycle for so much money!"
Andy: "Hey, it's a dog-eat-dog world."

【1+1中文】

安吉拉：我简直不敢相信你以那么高的价钱把摩托车卖给了他。
安 迪：嘿，现在是人吃人的社会。

【1+1解析】

Dog-eat-dog means that a person is like a dog that will eat another dog. Sometimes people say, "It's a dog-eat-dog world", as an excuse when they have hurt another person.
中文意思：人吃人的社会，竞争激烈的社会。