Sometimes swimmers call this「 breathing into the pocket 」as it feels like there「s a pocket of air there by your head.
有时游泳的人把它称为「呼吸进口袋」,因为它看起来就象在你头边有一个空气袋。
McDonald」s has been using double-walled paper cups--which have a small pocket of air between them to increase insulation--at about 2, 000 restaurants along the West Coast since 2012.
麦当劳从2012年起在美国西海岸的约2,000家餐厅使用双层纸杯,两层之间有空隙可容纳空气从而增强隔热效果。
He is actually displacing the medium, water, in order to pull a pocket of air down into it.
实际上他是在转移媒介,水来吸引一口袋空气到水中。