not have a care in the world
没有忧虑的步伐 Trouble--free Steps
没有忧虑或关心 No worries or cares
不用去担心…没有忧虑。
No need to worry... No worries.
youdao
我所做的都是大笑，不用去担心…没有忧虑。
All I did was "laugh" No need to worry... No worries.
战胜你生命中的恐惧，你就可以过一个没有忧虑的生活。
Defeat fear in your life, and you will be able to live an anxiety-free life.
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