Thunder often accompanies lightning.是什么意思？

Thunder often accompanies lightning.

雷声常伴着闪电.

thunder

n. 雷声，隆隆的响声；vi. 打雷；vt.& vi. 发出隆隆声，轰隆隆地快速移动，使快速移动，怒喝；

例句
...the distant thunder of a cannonade.
远处传来的隆隆炮声

often

adv. 常常，经常，时常，再三；

例句
Genetic abnormalities are more often associated with faults in paternal DNA than in maternal DNA.
相对于母本DNA,基因畸变往往更多地与父本DNA上的缺陷相关。

accompanies

v. 陪伴( accompany的第三人称单数 )，陪同，伴随…同时发生，伴奏；

例句
In special cases, a husband can deduct the travel expenses of his wife who accompanies him on a business trip...
在特殊情况下，丈夫可以扣除陪同出差的妻子的旅费。

lightning

adj. 闪电般的，快速的；n. 闪电，雷电；vi. 打闪；

例句
Suddenly a bolt of lightning crackled through the sky.
突然一道闪电划破长空。