♣ converge at　(v.+prep.)
会于一点，向一点会合 (of lines, moving objects, etc.) (come towards each other and) meet at a point
　The roads converged at the stadium.　各条道路在体育场汇聚。
 ♣ converge on　(v.+prep.)
向…拥去，集中gather and move towards (sth/sb) from different directions
　Angry crowds converged on the speaker.　愤怒的群众向讲演者拥去。
　People converged on the political meeting from all parts of the city.　人们从城市的四面八方涌向这次政治集会。