How to say to return to/to come (or go) back in Chinese 返回

登山队员返回大本营。 ( The climbers returned to base camp. )

人造地球卫星返回地面。 ( The artificial earth satellite returns to the ground. )

必须在当天返回驻地。 ( Must return to the station on the same day. )

登山队员当天返回了基地 ( The climber returned to the base that day )