今天傍晚,爸爸给我买了一个沙漏。它有十二厘米高,上下两头用木板固定,中间由五根玻璃管组成。其中四角各有一根细的,里面的沙颜色分别是红色、蓝色、橙色和紫色。中间是一根粗的玻璃管,用红水托着黄沙。玻璃管的中间变细形成一个小口, Today, my father bought me an hourglass. It is twelve centimeters tall, with two boards fixed at the top and bottom and five glass tubes in the middle. Four corners each have a thin, inside sand color is red, blue, orange and purple. The middle is a thick glass tube, with yellow sand on the water. The middle of the glass tube narrowed to form a small mouth,