a shamefaced explanation.

• 惭愧的解释

a shamefaced explanation.的用法和样例：

例句

1. She looks up at him with a guilty smile.
   她带着一丝惭愧的微笑抬头望着他。
2. John had a guilty look on his face.
   约翰脸上显出惭愧的表情。