《汉书·志·天文志》
它出现的时间长，预示其发生之事大。 
其出久者，为其事大也。 
It appeared for a long time, which indicated that it was a major event that would happen.
<s>[INST] Translate the following Classical Chinese text into modern Chinese: 其出久者，为其事大也。  [/INST] 它出现的时间长，预示其发生之事大。 </s>
Translate the following Classical Chinese text into modern Chinese: 其出久者，为其事大也。
user
它出现的时间长，预示其发生之事大。
assistant