Different kinds of activities, such as commenmorative meetings, planting trees,
举行各种各样的活动,例如召开纪念大会,植树造林,
But how would we find such a planet? At present, there is no telescope in existence that is capable of detecting the presence of life.
但是,我们如何才能找到这样一颗行星呢?现在,没有一台现存的望远镜可以发现生命的存在。