求翻译：在之前遇到的最为棘手的事应该是学生会关于拉赞助的工作，当时是为西昌学院学生会的庆典晚会做准备，协调的赞助商在晚会的前一天突然改变了他的决定，然而老师就派我去洽谈这件事 ，洽谈没成功，我及时的去和另一家商家商谈，最后很好的解决了这次晚会的资金问题，晚会很成功。是什么意思？

Prior experience in the most difficult thing is the students should work on sponsorship, Xichang College student was a celebration for the party to prepare and coordinate sponsors the day before at the party suddenly changed his decision, but the teacher sent I went to discuss this matter, the discu

In before meets the thorniest matter should be the student association about pulls the support the work, at that time was prepares for the Xichang institute student association's celebration party, the coordinated sponsor day before changed his decision suddenly at the party, however teacher sent me

In zhiqian encountered of most difficult of thing should is Student Union on pulled sponsored of work, then is for Xichang College Student Union of celebration party do prepared, coordination of sponsors in party of the day before suddenly changed has he of decided, however teacher on sent I to talk