goalpost

详细解释:n. 球门柱

英语解释：

名词 goalpost:

one of a pair of posts (usually joined by a crossbar) that are set up as a goal at each end of a playing field

例句：

The boys chalked out goalposts on the sports ground wall.男孩子们在运动场边的墙上用粉笔画上了球门柱。