在太空飞行中,失重不光能使航天员感到舒适、美妙,也给航天员带来许许多多的麻烦事。先说刷牙吧。如果也像在地面时那样进行,随着牙刷的摆动,水和牙膏泡沫都会飞起来,污染空气,损坏仪器设备。同时,聚集在嘴和鼻子周围的牙膏泡沫还会影响呼吸。所以,我们一般只能用洁牙纸擦牙,用 In space flight, not only can the astronauts feel comfortable and beautiful, but also caused so many troubles for astronauts. Let's brush your teeth first If it is done on the ground as well, water and toothpaste foam will fly as the toothbrush swings, contaminating the air and damaging the equipment. At the same time, toothpaste foam that collects around the mouth and nose can also affect breathing. Therefore, we generally only use toothpaste to clean the teeth