我们正在经历现代最严重的一段经济衰退。We are in one of the most severe recessions in modern times.这很可能是世界上受污染最严重的一片水域。It is probably the most polluted body of water in the world.萨拉热窝遭受了几个星期以来最严重的一次破坏。Sarajevo took one of its worst pounding...