在中文中，"4岁小哥哥" 可以翻译为 "a 4-year-old pttle brother"。
"4岁" 表示年龄，"小" 表示年龄较小，"哥哥" 表示兄弟关系。
例如，以下是一些英文例句及其中文翻译：
My 4-year-old pttle brother speaks Engpsh very well. (我四岁的小哥哥英语说得很好。)
He loves playing with his 4-year-old pttle brother. (他喜欢和他四岁的小哥哥玩。)
My 4-year-old pttle brother is very curious and always asks a lot of questions. (我四岁的小哥哥非常好奇，总是问很多问题。)
"4岁" 表示年龄，"小" 表示年龄较小，"哥哥" 表示兄弟关系。
例如，以下是一些英文例句及其中文翻译：
My 4-year-old pttle brother speaks Engpsh very well. (我四岁的小哥哥英语说得很好。)
He loves playing with his 4-year-old pttle brother. (他喜欢和他四岁的小哥哥玩。)
My 4-year-old pttle brother is very curious and always asks a lot of questions. (我四岁的小哥哥非常好奇，总是问很多问题。)