temporary road短语¹⁴⁴⁹⁷²⁺² 基本例句 临时道路 Because of no existing road available, high cost for temporary road, and a huge damage to the Surroundings, when constructing highways in desert, step- by- step method was used usually. 沙漠公路由于地处沙漠，无现成道路可供施工使用，修筑便道成本费用高，且对环境破坏较大，一般采用递进法施工。 dictall