1. But there is still fiery hot rock deep inside.
    但是地球内部仍有滚烫的岩浆。

2. The doctor felt the boy´s fiery cheek.
    医生摸了摸这孩子滚烫的面颊。

3. The stars are so fiery hot that they give off great light and heat — more than the hottest, brightest fire you can imagine.
    星星像火一样的灼热，释放大量的光和热——比我们所能想象的最热、最亮的火所发出的能量还要大。