Winter swimmers in north China often expose to an extremely stressful environment in cold water that we never encounter in our daily life.

我国北方冬泳运动员经常接触的冷水环境，为一般人日常生活中绝难经历的严酷冷应激条件。

youdao

Extremely refreshing and cold water, just wonderful for us when we arrived at about noon time.

水是冰山雪水，清凉无比，我们到的时候差不多是中午，正好降温，玩的不亦乐乎；

youdao

Trying to stop the flow of an oil gusher 5000 feet below the surface in extremely cold water is a complex engineering challenge as was the original exploration, drilling, and construction of the oil rig in the first place.

FORBES: Let's Not Compound Complexity

The men claim they were deprived of sleep, food and water, held in extremely cold cells without warm clothing, and threatened with beatings.

BBC: Donald Rumsfeld