sackcloth

名词 sackcloth:

1. a garment made of coarse sacking; formerly worn as an indication of remorse
2. a coarse cloth resembling sacking

1. I thought that he had posted the letter, but a week later he come to me in sackcloth and ashes to say that he had found it still in his pocket.
   我以为他已把那封信寄走了，但一个星期后他到我时悔恨交加地说，他发现那封信仍在他的口袋里。