In the first few months I spent here, I often thought to myself that if I were a crow, I could be enjoying a carefree life outside.

在这里生活的最初几个月里，我常常想，如果我是一只乌鸦，我就可以在外面享受无忧无虑的生活了。

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The crow was very happy with carefree life until he saw a swan one day.

乌鸦一直过着无忧无虑的生活，直到有一天他看到一只天鹅。

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He turned his face to look up at the sky in a carefree manner.

他仰首望着天， 做出一副满不在乎的神气。

《新英汉大辞典》

He creates a carefree world in a variety of rhymed meters that are full of alliteration, frivolity and fun.

NPR: Quirky Poetry Collection a Salute to Silly Stanzas

For brothers Zac and Ethan Holtzman, it was 1960s Cambodian pop music Khmer tunes at once delicate and brash, with a carefree innocence haunted by a sense of lingering menace.

NPR: Dengue Fever Seeks 'Venus on Earth'

It dragoons the mandatory rock stars (the Red Hot Chili Peppers are giving a concert for Obama volunteers in Ohio this week) and actors (Kal Penn, best known for portraying a carefree pothead, is a staple) to appeal to the less politically engaged.

ECONOMIST: The Obama campaign