我们常说，小孩子们是天真烂漫、自由自在的。表达 to be footloose and fancy-free 形容人了无牵挂、自由自在，不承担家庭或感情上的责任和义务。其中，形容词 “footloose” 和 “fancy-free” 是同义词，意思都是 “自由自在的，无拘无束的”。

• Enjoy being footloose and fancy-free while you can, young man. As you grow older, you will have responsibilities.
  年轻人，尽情享受无拘无束的日子吧！随着年龄的增长，你则需要担负起责任。
• Now that she’s left her stressful job, she’s footloose and fancy free!
  她已辞去了那份压力很大的工作，现在无牵无挂、自由自在！
• After they got married and had a family, they couldn’t travel as much as they used to! They were no longer footloose and fancy-free.
  他们结婚生子后，不能像以前那样总是去旅游了。他们不再无拘无束、逍遥自在了。