The firecrackers were crackling and spluttering.是什么意思？

The firecrackers were crackling and spluttering.

鞭炮劈里啪啦地响.

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。

firecrackers

n. 爆竹，鞭炮( firecracker的名词复数 )；

例句
The firecrackers were crackling and spluttering.
鞭炮劈里啪啦地响.

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

crackling

n. 轻微的爆裂声，噼啪声，（烤猪肉的）脆皮；v. 发出轻微的爆裂声，发出噼啪声( crackle的现在分词 )；

例句
...a crackling fire.
噼啪作响的炉火

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。