astronomical day

基本解释

The next day, I learned that the Carson show had earned good ratings nationwide and astronomical ones in Arkansas.
第二天，我了解到卡森的节目在全国获得了不错的收视率，在阿肯色州的收视率高得不得了。
But by firing its three ion engines one at a time over 620 days -- accumulating another 60 miles per each day -- Dawn has reached its current astronomical speed and has no plans of slowing down.
但是在620天的时间里开动了三个引擎之一——再积累每天60英里——曙光号就已达当前的天文速度，而且没有减速的计划。
It is gradually slowing down and factors such as disruptions in the Earth's core, extreme weather, volcanic eruptions and earthquakes can all influence the precise length of the astronomical day.
地球的自转正在逐渐的慢下来，而像地核分裂、极端天气、火山爆发、地震发生等事件都会影响天文日的确切长度。