Cold air also has a drying effect, which can increase the risk of dehydration.

冷空气也有干燥的效应，会增加你脱水的危险。

youdao

Air drought caused by dry paper towels was used to mimic dehydration stress.

由干燥纸巾引起的空气干旱被用来模拟脱水胁迫。

youdao

The air on planes is extremely dry, and some experts believe that dehydration is a leading cause of jet lag.

机舱内的空气极为干燥，并且很多专家认为脱水是导致时差反应的首要因素。

youdao

The researchers did note that many of the cases of lightheadedness could be due to the relatively low oxygen content of cabin air-roughly equal to 8, 000 feet above sea level-or to passengers experiencing dehydration during long or multiple flights.

WSJ: The Flight Status of Passenger Ailments