疫情爆发后，我们政府立即起草了计划．
When epidemic situation ， our government drew up the plan at once．
钟南山被认为是中国最好的医生之一．
Zhong Nanshan is one of the best doctors in China．
疫情爆发后，我们政府立即起草了计划．
When epidemic situation ， our government drew up the plan at once．
我们必须及时上交作业．
We must our homework in time．
我们不敢相信武汉的火神山和雷神山医院不到15天就建成了．
We can't believe that Huoshenshan Hospital and Leishenshan Hospital in Wuhan ______ within just 15 days．
与过去的定位系统相比，北斗定位系统更精准更强大．
the positioning systems in the past， Beidou positioning system is more accurate and powerful．