take sth to heart,意思是 “把某事放在心上，为某事耿耿于怀”。

【例句】
Never take his remarks to heart. He’s rude to everyone.
永远别把他的话放在心上，他对谁都很无礼。

Don't take it to heart - he was only joking about your hair.
別太放在心上——他只是拿你的頭髮開玩笑而已。