火车在轨道上行驶。
huǒchē zài guǐdào shàng xíngshǐ 。
The train is running on the track.
科学家们正在研究星球的轨道。
kēxué jiā mén zhèngzài yánjiū xīngqiú de guǐdào 。
Scientists are studying the orbit of the planets.
他总是按照传统的轨道思考问题。
tā zǒngshì ànzhào chuántǒng de guǐdào sīkǎo wèntí 。
He always thinks about problems in a conventional way.