portage
n
1 [U] (cost of) carrying goods; carriage 搬运(费); 运输.
2 (esp US)
(a) [U] carrying boats or goods overland between two rivers, lakes, etc, eg on a canoeing trip (两水路间的)陆运(将小船或货物从一水域经陆地运至另一水域之作业, 如乘小划子途中所需的).
(b) [C] place where this is done (两水路间的)陆运区间.