arriving at 和 arriving on 有什么区别啊?

when we were arriving和 when were we arriving有什么区别?两个都对吗? hurried to和arriving at区别 will arrive和will be arriving有什么区别吗? arriving When will you be arriving 和When will you arrive 有什么区别 arriving什么意思 arriving 什么意思? arriving是不是 arrive的名词形式,sb's arrival和sb's arriving的区别, arrival与arriving的区别 when arriving home和when I arrived home 的区别 will arrive 和will be arriving的区别在哪里? 谁知道“dirty”和“arriving”是什么意思?