When summer comes, the weather gets hotter and hotter.

当夏天来到时，天气变得越来越热了。

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Gradually they began to feel hotter and hotter in the warm air.

渐渐地，他们开始感到热，在温暖的空气热。

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As we drove, the engine got hotter and hotter, but we went on anyway.

我们一边开车，引擎愈来愈热，但我们不顾一切，勇往直前。

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The battle grew hotter. The English and their allies were steadily retreating all over the field.

VOA: special.2011.03.26

And that was the water at the bottom of the waterfall is probably going to be hotter than the water at the top of the waterfall.

瀑布底部的水,或许比顶部,的水更热。

麻省理工公开课 - 热力学与动力学课程节选

I'm from Houston, so it's just hot and hotter. These are the two seasons there.

我来自休斯顿，那儿只有热和更热这两个季节。

去溜冰场 - SpeakingMax英语口语达人

With so little multi-family coming on the market, investment in single family homes for rent is becoming hotter and hotter.

FORBES: The Housing Recovery: A Rethink

Temperature-sensing paints work similarly they use luminescent molecules that light up according to how much they are vibrating, glowing less (and shaking more) when they are hotter and glowing more (and shaking less) when they are cooler.

ECONOMIST: Pressure paints

Parts of the Great Basin are hotter and drier than they were ten years ago.

FORBES: Magazine Article