网友回答：
they put a television camera on the moon in order to let the people on the earth watch them on tv at home. before they left the moon， an important day
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
they put a television camera on the moon in order to let the people on the earth watch them on tv at home. before they left the moon， an important day
