Reciprocating motion is a widely existing form of mechanical motion in the natural environment. Triboelectric nanogenerators (TENGs) that work in sliding mode are ideal for harnessing large-distance reciprocating motion. and their energy conversion efficiency could be greatly enhanced by adding springs to them. Herein. https://www.roneverhart.com/Wet-Stick-Moisturizing-Lip-Shine-Sunset-Simmer/