The helicopter went down in a ball of fire.

直升机在一团火球中坠落。

I hope John will join us, he is a fireball (or he is a ball of fire).

我希望约翰能加入我们，他是个精力旺盛的人。

I hope John will join us, he is a fireball. (or he is a ball of fire.)

我希望约翰能加入我们，他是个热情旺盛的人。

Eliot isn't a good student, but on the basketball court he's a ball of fire.

埃利奥不是个好学生，但但是在篮球场上他非常活跃。

Eric is not a good student, but on the basketball court he is a ball of fire.

埃里克不是好学生，但在篮球场上他很活跃。