15岁他就成为有名的钢琴家了英文（十五岁她就成为有名的钢琴家了）

高中英语 中译英 我的兄弟都是大学生。 All of my brothers are college students.冬季白天短，夜晚长。 Winter is short in day and long in night.布朗夫人看起来很健康。Mrs brown looks very healthy. 十五岁他就成为有名的钢琴家了。 He became a famous pianist when he was only 15.孩子们，请保持安静。 Children,please keep silent.这本书是...