If he didn't find a shelter, his body temperature would get very low, which could quickly kill him.

如果他没有找到庇护所，他的体温会变得很低，最终会让他致命。

youdao

The temperature reached a record low in London last night.

昨晚伦敦的气温降到了有记录以来的最低点。

《牛津词典》

Also, because the molecular motion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire the speed needed to escape.

此外，由于气体的分子运动依赖于温度，在木星行星的低温下，即使是最轻的气体也不可能获得逃逸所需的速度。

youdao

An extremely low body temperature can cause the heart to beat so slowly that a pulse may be difficult to find.

VOA: special.2009.12.30

In principle, this value, this efficiency, can approach 1 as the low temperature approaches absolute zero.

这个值，效率，当低温热源的温度1,是据对零度时可以达到一。

麻省理工公开课 - 热力学与动力学课程节选

Let's say we start from some V1 and p1 here, so high pressure, small volume and we end up with a high volume low pressure, under constant temperature condition.

例如我们要从压强比较高，体积比较小V1，p1出发,到达低压强，大体积的末态，过程中温度不变。

麻省理工公开课 - 热力学与动力学课程节选

While the Buchanan family were wearing warm clothing, they were not wearing lifejackets and the water temperature was low at about five degrees.

BBC: Holly Buchanan's remains found on Loch Lomond island

At that depth, the pressure of the rock overhead is just enough for liquid CO2 to be stable, if the temperature is low enough.

BBC: Doubts over water on Mars

While the survival rate in cases where the body's core temperature has fallen below 70 degrees Fahrenheit is minute, people have survived with a core temperature as low as 59 degrees.

FORBES: Public Health