iron fist in the velvet glove

• 外宽内严,外柔内刚

iron fist in the velvet glove的用法和样例：

例句

1. He is one of those men who have an iron hand in a velvet glove.
   他是一个外柔内刚的人。
2. The boss always appears kind and sympathetic but in fact rules with an iron fist in a velvet glove.
   老板总是似乎很仁慈和富有同情心，但实际上他是外柔内刚。