The floatingrig, longer than a football field and 15 stories high, had eight hollow legs.
浮动平台比足球场还长，有15层高，有8个中空支腿。
2
The system's ability to detect flow in gallons rather than barrels and to compensate for floatingrig movement helps to minimize false-positive kick alarms.
该系统独有的监测更小溢流和补偿浮动钻井设备运动的能力，有助于减小井涌的误报频率。
3
You can either install an expensive system of treehouse cables and bolts or rig your own free-floating beam.