The same fate could soon befall the unusually large Rabb's fringe-limbed tree frog, which glides through the forest using its big webbed feet to steer safely to the ground.
As it turns out, it is easier to keep only one edge from the tree to a given fringe vertex in the priority queue at any given time.
这样做了以后，要使优先级队列中在任意时刻只保持一条从树中顶点到某边缘点的边就变得容易了。
3
The two big windows faced the water; he could see the boats and the barges swinging up and don and the fringe of an island planted with tree like a round bouquet.