Eg: Everybody made suggestions, but no one actually offered to bell the cat. Our great cause needs people to bell the cat instead of those who only talk big words.

• bell the cat自告奋勇去冒险;老虎头上拍苍蝇寓言所寄托的意思很明白:遇到困难的问题时候,既需要有出谋献策的人,更需要有挺身而出的实干家。