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。
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.
金星一年的长度相当于243个地球日，与地球的365天标准模型甚为接近。
Its year, at 243 days, is not even all that different from our standard 365-day model.
打开如今的比赛日节目或者第5电台直播，你会听到评论员花费了大量的时间来评论比赛官员的表现，几乎与他们分析比赛的时间长度相等。
Turn on Match of the Day or Radio 5 Live these days and the pundits spend almost as much time assessing the performance of the match officials as they do analysing the play.
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