a handful of students的用法和样例：
- A dull professor may have only a handful of students.
- He has a handful of intelligent and apt students.
- The farmer examined a handful of earth.
- I drew a handful of coins from my pocket.
- She finished all three stanzas perfectly, one of only a handful of students who did, as it turned out.
- He dipped into the bag and brought out a handful of sample wheat.