a blithe spirit的用法和样例：
- She works in a blithe spirit in spite of all difficulties.
- She continued to work in a blithe spirit in spite of all difficulties.
- Face everyday in your life with a blithe spirit, try to experience, to taste, to appreciate.
- Not only is he a young, smart, and insightful entrepreneur with a coveted fortune, but he also happens to be a blithe spirit with a carefree attitude to life.
- TO A SKYLARK Hail to thee, blithe Spirit!
致 云 雀 你好, 欢乐的精灵!