an oil rig

• 石油钻塔

an oil rig的用法和样例：

例句

1. The oil rig is now fully operative.
   石油钻塔现全面开工。
2. Her father worked on oil rigs and farms through most of the Depression.
   她父亲在大萧条时期为了养家糊口，不是在石油钻塔下打工，就是在农场务农。