这是一项有趣的发明,以背带代替了救生圈。暑假期间,到江、河、湖、海中游泳的小孩,系这种背带,头部能浮出水面,不致发生溺水事故。这种背带可以分别系在腰部和肩部。它有两个空气入口,充满空气后,能使小孩以稍向后仰的姿势浮起,并使口鼻露出水面。排出空气后,只要把肩膀上的吊带卸下,就和 This is an interesting invention, replacing the lifebuoy with straps. During the summer vacation, children swimming in rivers, rivers, lakes and sea are such straps that their heads can surface and do not cause drowning accidents. This strap can be tied at the waist and shoulders. It has two air inlets that, when filled with air, allow the child to float in a slightly reclined position with the nose and mouth out of the water. After exiting the air, just remove the sling on the shoulder and let it go