国际空间站以大约90分钟的周期完成一次轨道运行。

The International Space Station completes one ___orbital revolution in about 90 minutes.

医生检查了患者眼眶周围的肿胀情况。

The doctor examined the swelling around the ___orbital area.

游乐场的旋转木马有着漂亮的环形轨道。

The amusement park's carousel has a beautiful ___orbital track.