speed down to?down to

题目

speed down to?down to
That night as the train was speeding along the St Lawrence River toward the Gulf of St Lawrence and down to the distant east coast,the cousins dreamed of French restaurants and red maple leaves

答案

那晚,火车沿着 St Lawrence 河,向着 St Lawrence 湾快速开动,开向遥远的东北海岸,表兄弟们梦想到了法国餐馆,和红色的枫叶.
speed down to,不是一起的
down to,往下走,从南往北走,叫down