Question

【题目】Yang Jiang published a book of her three-member-family's life We Three in her (ninety)

Answer 1

【答案】nineties
【解析】in one's nineties表示"在某人90来岁时"。句意：杨绛在她90来岁时出版了一本回忆三口之家生活的书《我们仨》。