pile-driversˈpaɪldraɪvəzBNC²³⁶²¹³⁺¹Economist⁵³⁵⁸¹⁺¹ 基本例句 化打桩机原型pile-driver的复数 They are more focused on the German pile-drivers laying the foundations of the towers of Alsunut— and on the oil concessions. 这些国家更关注德国打桩机给阿尔叙努特的塔楼埋设地基的进度，以及取得石油的开采许可。 ecocn