She has a fiery temper.

她脾气暴躁。

He's got a fiery temper and flares up at the slightest provocation.

他是火爆性子，一点就着。

He has a fiery temper.

他的脾气很火爆。

He has a fiery temper.

他脾气暴躁。

Her fiery temper got the Better of her.

她克制不住自己暴躁的脾气，又发火了。