地形: topography, terrain, landform...
茫茫: boundless, vast and obscure...
能耐: ability, capability...
出动: to start out on a trip, to dispatch troops...
不屑: to disdain to do sth, to think sth not worth doing, to feel it beneath one's dignity...
遇难: to perish, to be killed...
犹豫: to hesitate...
深入: to penetrate deeply, thorough...
供不应求: supply does not meet demand...
利益: benefit, (in sb's) interest...
