同一個 U 形場地，兩種材質
登入就可以看這一支怎麼連回核心畫面。
skateboard ramp · noun
A large concrete structure shaped like a pipe cut in half along its length, with a rounded bottom and two high curved sides, which skateboarders ride up and down to do tricks.
U型滑板池
The name is the picture. Take a very large pipe, cut it in half along its length, and lay it open side up on the ground. What you get is a U: a rounded floor in the middle and a high curved wall rising on each side. A rider goes back and forth across the U, trading speed for height, and the tricks happen in the moment they shoot past the top edge.
這個字的名字就是它的圖。可以想成拿一根很粗的水管，沿著長邊剖成一半，然後開口朝上放在地上。得到的就是一個 U 字：中間是圓形的底，兩邊各有一面往上翹的高牆。玩的人在 U 裡來回衝，把速度換成高度。動作就發生在衝出上緣、人短暫飛在空中的那一瞬間。
One branch