a bold innovation的用法和样例：
- He tried to put a bold face on his failure.
- In view of afore-mentioned a variety of methods, you also might as well come a bold innovation, it is probably in this attempt the experience that you will find other to had been done not have.
- He is a bold thinker, with lots of original ideas.
- A bold black headline screamed out from the front page.
- He could still preserve a bold front.
- Then Kennedy decided on a bold stroke.