thunder可數(shù)嗎

　　Heavy trucks kept thundering past.

　　重型卡車不斷地隆隆駛過。

　　Thunder boomed in the sky overhead.

　　雷聲在天空中隆隆作響。

　　Outside, thunder boomed and crashed.

　　外面雷聲隆隆，霹靂炸響。

　　Thunder crashed in the sky.

　　霹靂在空中炸響。

　　Thunder grumbled in the distance.

　　遠處雷聲隆隆。