letter of thanks

英[ˈletə ɔv θæŋks] 美[ˈlɛtɚ ʌv θæŋks]

[词典] 感谢信;

[例句]He received a letter of thanks for his donation of books to the Shakespeare library.

他收到一封感谢信，感谢他捐书给莎士比亚图书馆。