call at：停靠；（短暂）停留 比如：This train calls at Pingyao and Hongtong.火车在平遥和洪洞停车. call on 1.邀请 比如：I now call on the chairman to address the meeting.现在请主席向大会致辞. 2.请求,要求 比如：Allies will increasingly call upon the US for assistance as they warily eye ascendant neighbours .在警惕注视邻国崛起之际,同盟国会越来越多地呼吁美国施以援手.
