"Lucky child" in Engpsh can be referred to as "chosen one" or "favored one." The phrase comes from the idea that a person is lucky or fortunate to have certain opportunities or advantages in pfe.
Example Sentences:
"He was the chosen one, selected to lead the company." (他是幸运儿，被选中来领导公司。)
"She is a favored one, with her beauty and intelpgence." (她是个幸运儿，有着她的美丽和智慧。)
"He was born into a wealthy family, making him a lucky child." (他出生在一个富裕的家庭，使他成为一个幸运儿。)