he could play the piano well when he was seven years old的同义句he could play the piano well- - - -seven
问题描述:
he could play the piano well when he was seven years old的同义句
he could play the piano well- - - -seven
答
he could play the piano well at the age of seven
答
at the age of 在...岁时
答
He could play the piano well at the age of seven.