Derrick
01
起重机, 钻塔
a type of lifting apparatus consisting of a vertical mast and a boom, typically used in construction or oil drilling operations
语法信息
有生性状态
无生命
形态构成
简单词
可数
复数形式
derricks
例子
The construction crew assembled the derrick to lift heavy materials to the upper floors of the building.
施工队组装了井架，将重型材料吊到建筑物的上层。
02
井架, 带有从吊杆悬挂的起重滑车的简单起重机
a simple crane having lifting tackle slung from a boom
