请帮我翻译此段话 (the park 是指一个挖掘机主题公园)

问题描述:

请帮我翻译此段话 (the park 是指一个挖掘机主题公园)
One of the excavator exercises that people can do at the park to get used to the diggers before being let loose involves plucking basketballs form the tops of cones

人们在被允许放开*使用挖掘机之前,使之在公园中习惯挖掘机的练习之一包括从椎体的顶部拔下篮球 form是from写错了 只能这么认为.