Friction - A force that opposes motion., Streamlining - Changing the shape of something to reduce friction, Dolphin - An animal with a streamlined shape, Cyclist - Crouch down and wear streamlined helmets to reduce friction, Air resistance - Caused by the frictional forces between air and an object, Boat - The hull is streamlined so that water resistance is reduced.,

Y4 Streamlining

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？