All you have to do is to collect and accumulate enough points to redeem the attractive Bonus gifts.
所有您需要做的是收集和积累足够的积分兑换礼品的有吸引力的奖励。
Alternatively, a craft could fly to one of their moons to collect rock samples and also accumulate hydrogen, by separating water obtained from melted ice, for the trip back to Earth.
另外，飞船可以飞到行星的一个卫星上采集岩石标本，还可以通过离析冰水以积累氢，为返回地球补充燃料。
Alternatively, a craft could fly to one of their moons to collect rock samples and also accumulate hydrogen, by separating water obtained from melted ice, for the trip back to Earth.
另外，飞船可以飞到行星的一个卫星上采集岩石标本，还可以通过离析冰水以积累氢，为返回地球补充燃料。
应用推荐