“和颜悦色”，汉语成语，意思是和蔼喜悦的神色，形容态度温和亲切。可以翻译为“with a kind and pleasant countenance，wearing a pleasant and gracious face，be mild and nice”等。

例句：

tā hé yán yuè sè de shuō ：“wǒ bìng bù shì xiǎng sǎo nǐ de xìng 。”
他和颜悦色地说：“我并不是想扫你的兴。”
"I didn't mean to upset you," he said mildly.

wǒ huì hé yán yuè sè de duì tā
我会和颜悦色地对她。
I'd go easy on her.