a lump of dough的用法和样例：
- A little leaven leavens the whole lump of dough.
- Jesus likened their philosophies to yeast which silently works within a lump of dough and brings about its change.
- I worked up a lump of clay into a bust.
- She impaled a lump of meat on her fork.
- The girl takes a lump of sugar from the box.