The Sirian scientists went to a load of time and trouble to create these shields, which involve the gradual release of salt water into the atmosphere but at a slow enough rate that it freezes.

• 天狼星科学家花费了大量时间与心血建造了这些冰天，这包括逐渐释放盐水进入大气，不过它以一个足够慢的速度冻结。