BBC News with David Austin Congolese refugees have become returning home to the strategic border town of Bunagana after government troops backed by United Nations forces drove out rebels from the M23 group._____________________________ Here is Gabriel Gatehouse. 戴维德`奥斯汀带来的BBC新闻 在联合国军队支持下刚果政府军将M23叛军逐出后,刚果难民们重返具有战略意义的边界重镇布纳加纳的家园.________________________________加布里埃`盖特豪斯报道.