It happens on hot days more than on cold, which leads to speculation that the action cools the brain.

热天比冷天打哈欠多，人们猜测，这种动作能给大脑降温。

youdao

The valve can not bear the push, pull and torsion action generated by the heat-expansion and cold-contraction of pipe or other reason.

盲板阀不得承受管道热胀冷缩或其他原因发生的外力对其产生推拉、扭曲作用。

youdao

Mouth to blow cold coffee is very gentle, not ritual action.

用嘴把咖啡吹凉，是很不文雅、不合礼仪的动作。

youdao

The action scenes are reminiscent of Cold War-era spy movies with classic fistfights and kicks, thrilling and unpretentious.

VOA: standard.2010.07.26

On Friday, Germany, the largest and most influential member of the euro zone, poured a degree of cold water on the hopes for more aggressive action by the ECB.

FORBES: Not So Fast, Bernanke And Draghi Have Disappointed Before