Mechanical Energy: Bicycle, Hammer, Canoe Paddle, Electrical Energy: Laptop, iPhone, Charger, Light Energy: Lamp, Flashlight, Sunlight, Thermal Energy: Toaster, Oven, Heat from the Sun, Sound Energy: Drum, Speakers, Barking, Chemical Energy: Batteries, Food, Coal,

排行榜

视觉风格

选项

切换模板

恢复自动保存: