The car engine pinking slightly.是什么意思？

The car engine pinking slightly.

车子的引擎发出“一点点”爆震声.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

car

n. 汽车，车厢，轿车；

例句
His car was held up and he was abducted by four gunmen...
他的车遭遇拦劫，随后他被4名持枪歹徒劫持。

engine

n. 发动机，引擎，工具，火车头，机车；vt. 给…安装发动机；

例句
The engine spat and banged.
发动机爆出火花，接着发出砰的巨响。

pinking

震性，刺戳；

例句
The car engine was pinking slightly.
车子的引擎发出一点点爆震声.

slightly

adv. 轻微地，轻轻地，细长地，苗条地，〈罕〉轻蔑地，粗；

例句
On first acquaintance she is cool and slightly distant.
初次相见时她表现冷淡并有点爱搭不理。