A crumb of comfort的用法和样例：
- England's win at cricket was the only crumb of comfort in a week of consistently bad news for British sport.
- I have not a crumb of kindness for you.
- It was the only crumb of comfort he could salvage from the ordeal.
- Eraser crumbs; not a crumb of kindness for you.
- I failed my exam, and my only crumb of comfort is that I can take it again.