a heartfelt expression of thanks的用法和样例：
- The theme of death also pervades his unfinished Tenth, yet here one finds a sense of peace and a heartfelt expression of human love.
- An expression of thanks or a token of appreciation.
- I sent them flowers as an expression of thanks.
- I think an expression of thanks to our host would be in place.
- She penned a few words of thanks.