derrick

详细解释:n. 起重机, 小偷
【化】 吊杆起重机; 人字起重机

英语解释：

名词 derrick:

a framework erected over an oil well to allow drill tubes to be raised and lowereda simple crane having lifting tackle slung from a boom

例句：

The ginpole is the simplest form of derrick.起重吊杆是一种最简单的起重机。