1. The sun is hottest when it is overhead.
    太阳在头顶上时是最热的时候。

2. 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。

3. I climbed into the back-seat of the world's hottest jet fighter, the F-16.
    我登上世界上最新式的喷气式战斗机F-16的后座，

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