a bruising battle的用法和样例：
- Gordon Brown has vowed to do "whatever is necessary" to preserve the United Kingdom in the wake of a bruising battle over a referendum on Scottish independence.
- You are cruising for a bruising, you know that?
- He had a bruise just below his left eye.
- She had a dilly of a bruise on her arm.
- Discolored, as from a bruise; black-and-blue.