We put up at the surface an oil derrick.

我们就在那块地面上竖起一个井架。

An oil derrick showered silver confetti on the whooping crowd.

竖起的油井架向欢呼的人群中喷洒着银色的纸屑。

When is has been decided where we are going to drill, we put up at the surface an oil derrick.

当确定钻孔地点后，我们就在那里竖起一个井架。

An oil derrick is a necessary supporting frame, and plays an important role in oil production.

采油井架钢结构是钻采石油时所必需的支架结构，对油田生产起着重要作用。

When it has been decided where we are going to drill, we put up at the surface an oil derrick.

当确定钻孔地点后，我们就在那里竖起一个井架。