这道光线最终穿越大爆炸后的宇宙，充分冷却形成了氢原子。
It is the light that was finally allowed to move out across space once a post-Big-Bang Universe had cooled sufficiently to permit the formation of hydrogen atoms.
与此同时、铸件在预定时间内未充分冷却就开模。
Meanwhile, casting at a predetermined time not fully cooling and then open mode.
它每晚都发生，但是买其他口味多用的额外时间允许发动机充分冷却以启动。
It was happening every night, but the extra time taken to get the other flavors allowed the engine to cool down sufficiently to start.
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