早在50年前，美国天文学家FrankDrake(弗兰克·德瑞克)就已开始搜寻来自外星文明的信号。
FIFTY years ago, an American astronomer called Frank Drake started to search for signals coming from alien civilisations.
早在50年前，美国天文学家FrankDrake(弗兰克·德瑞克)就已开始搜寻来自外星文明的信号。
FIFTY years ago, an American astronomer called Frank Drake started to search for signals coming from alien civilisations.
应用推荐