爆炸产生了一个巨大的火球，照亮了整个地区。

The explosion produced a huge ___fireball that illuminated the entire area.

我妹妹是个活力四射的人，每天都能感染周围的人。

My little sister is a real ___fireball, always energizing everyone around her.

昨晚我们看到一颗明亮的火球划过夜空。

Last night we saw a bright ___fireball shooting across the night sky.