1. The plane blasted into the air like a bullet shot out of a rifle, and soon we were at 2,000 feet and climbing.
    飞机像离膛的子弹射入空中，很快我们升到了2,000英尺的高空，并在继续爬升。

2. He grunted as the bullet hit him.
    子弹击中他时他疼得哼出声来.

3. Just then there was the sharp whistle of a bullet which passed near the boy.
    就在这时, 一颗子弹在男孩身边尖声呼啸而过.