同事中隐藏的对手Hidden opponents in colleagues

狐狸告诉刚就职的孩子：注意，你的同事是你的朋友，但也有隐藏的对手，他们可能就是你今后的敌人。

The fox tells the newly inaugural child: Note that your colleagues are your friends, but there are also hidden opponents, who may be your future enemies.