来来往往的

In the Gulf of Mexico, trawlers ply back and forth year in year out, hauling vast nets that scarify the seabed and allow no time for plant and animal life to recover.

墨西哥湾，拖网渔船年复一年来来往往地“辛勤”劳作，拖着巨大的渔网，刮破了海底，没有给动植留下恢复的时间。