Jack

例句：

1. 1. He is a famous actor known for his role in the movie "Jack."
   他是一位著名的演员，因在电影《杰克》中的角色而闻名。
2. 2. Jack is my best friend and we often hang out together.
   杰克是我最好的朋友，我们经常一起出去玩。
3. 3. Jack was born on January 1st, 1985 in New York City.
   杰克于1985年1月1日出生于纽约市。