"blithe" in Chinese (Simplified)
无忧无虑漫不经心
Definition
形容一个人开心、无忧无虑，有时也指过于漫不经心以致无视可能的问题。根据语境可为褒义或略带贬义。
Usage Notes (Chinese (Simplified))
多用于文学或较正式场合。既可褒义（快乐、无忧）也可能带批评（轻率、不关心）。“blithe spirit”、“blithe disregard”等说法常见。日常口语中较少见。
Examples
She gave a blithe reply and walked away.
她轻松地回答了一句就走开了。
He faced the test with a blithe attitude.
他以**无忧无虑**的态度面对考试。
The children played with blithe joy in the garden.
孩子们在花园里带着**无忧无虑**的快乐玩耍。
She moved through life with a blithe spirit, never worrying about what might go wrong.
她用**无忧无虑**的心态面对生活，从不担心有可能出现的问题。
His blithe disregard for the rules got him in trouble at work.
他对规矩的**漫不经心**让他在工作中惹上麻烦。
Don’t be so blithe about deadlines or you might miss something important.
对截止日期不要过于**漫不经心**，否则你可能会错过重要的事情。