2 sentences

1. 据估计，地球上有一千多万物种。

   jù​gū​jì, dì​qiú shang yǒu yī​qiān duō wàn wù​zhǒng.

   There are estimated to be more than 10 million species on Earth.

   Source: CCMatrix

2. 据估计，这个洞穴的墙壁上的画有超过一万七千年的历史。

   jù​gū​jì, zhè​ge dòng​xué de qiáng​bì shang de huà yǒu chāo guò yī wàn qī qiān nián de lì​shǐ.

   It is estimated that the paintings on the walls of this cave are more than 17,000 years old.

   Source: CCMatrix