sweetheart
noun [ C ] uk/ˈswiːt.hɑːt/ us/ˈswiːt.hɑːrt/
恋人，心上人
a boyfriend or girlfriend
She eventually married her childhood sweetheart. 她最后嫁给了她儿时的心上人。
（称呼自己喜爱的人，尤其是儿童或恋人）甜心，宝贝儿
used for talking to a person that you love, especially a child or person you have a romantic relationship with
[ as form of address ] "Happy birthday, sweetheart," he said. “生日快乐，亲爱的。”他说道。
友善慷慨的人
a kind and generous person
"Oh, you're a sweetheart," she said, when I brought her breakfast in bed. 当我把早餐送到她床上的时候，她说：“哦，你真好。”