a lump of money的用法和样例：
- I worked up a lump of clay into a bust.
- She wanted to be paid in a lump, but I was short of money and had to give her a little and promise that I would pay the rest later.
- She impaled a lump of meat on her fork.
- The girl takes a lump of sugar from the box.
- Mary takes a lump of sugar from the box.