光缆: optical cable...
不可思议: inconceivable (idiom); unimaginable, unfathomable...
指向: to point towards, aimed at, facing, the direction indicated...
退役: to retire from the military, sport etc, to demobilize, to decommission, retired from use...
电脑: computer...
科幻: science fiction, abbr. for...
全都: all, without exception...
腰: waist, lower back, pocket, middle, loins...
议: to comment on, to discuss, to suggest...
多年来: for the past many years...
