a fumbling schoolboy的用法和样例：
- Then he directed his course towards Grand-Villard, near Briancon, in the Hautes-Alpes.It was a fumbling and uneasy flight,-- a mole's track, whose branchings are untraceable.
- The schoolboy made a face at his teacher's back.
- Look here, do you think you can treat me like a schoolboy?
- There is a vein of melancholy in his character.