请亲们帮我分析下面的句子^^Itmaybenecessarytopurchaseyourmealandsnacksinanairportfoodcourtpriortoboardingortobringsomethingfromhome.请亲们帮我分析下面priorto之后的句子,在这里priorto是介词还是

Question

请亲们帮我分析下面的句子^^
It may be necessary to purchase your meal and snacks in an airport food court prior to boarding or to bring something from home.
请亲们帮我分析下面prior to之后的句子,在这里prior to是介词还是副词?表示在..之前,还是表优先级,or to之后为什么是动词原形呢?（介于prior to 之后用的是动名词形式.）所以有点儿混乱.

Answer 1

这句话意思是登机前在机场餐饮区买食物和零食或者从家里带一些食物和零食坐飞机,or 是或者的意思,一种选择是登机前在机场买食物上飞机,一种是从家里带食物上飞机,It may be necessary to do sth or to do sth,prior to （在……之前）doing sth 与or 无关.