sackcloth

n.

麻袋布；

in sackcloth and ashes处于悲痛之中；在忏悔中

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。

Sackcloth or silk?
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Recycled Polyethylene Composites Reinforced with Jute Fabric from Sackcloth: Part II-Impact Strength Evaluation
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Recycled Polyethylene Composites Reinforced with Jute Fabric from Sackcloth: Part I-Preparation and Preliminary Assessment
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