1. orbit v.&n. 轨道；绕...轨道而行
Yang was in space for 21.5 hours and made 14 orbits of the earth.
Now our satellites are in _________.
When he was orbiting in the capsule, he took photographs of earth.
2. congratulation n. 祝贺（常用复数表示“贺词”）
It's your birthday today? Congratulations!
