"not have a care in the world" in Chinese (Traditional)
一點煩惱都沒有
Definition
感到完全無憂無慮，毫無煩惱或擔憂。
Usage Notes (Chinese (Traditional))
這是一個非正式、正面的慣用語，用來形容人非常放鬆、毫無煩惱，常帶羨慕或稱讚之意。不要和“粗心”（careless）搞混。
Examples
The children ran around the park, not having a care in the world.
孩子們在公園裡跑來跑去，**一點煩惱都沒有**。
On vacation, I felt like I did not have a care in the world.
度假時，我覺得自己**一點煩惱都沒有**。
She smiled, not having a care in the world.
她笑了，**一點煩惱都沒有**。
After the exam, he looked like he didn't have a care in the world.
考試結束後，他看起來**一點煩惱都沒有**。
Sometimes I wish I could have no cares in the world like my cat.
有時候我希望像我家的貓一樣**一點煩惱都沒有**。
He strolled along the beach, not having a care in the world, just enjoying the sun.
他在沙灘上漫步，**一點煩惱都沒有**，只是在享受陽光。