400,000 greater snow geese flock to the estuaries along the Atlantic coast of the United States 40万只大西洋雪雁成群飞往 美国大西洋海岸的河口地带
The new arrivals open up paths like arteries along which water flows, extending the reach of the flood. 新来者开辟了新的干道 洪水流淌在这些「动脉」中 不断向外扩展