1 . 听双语新闻—填词
Dinosaur footprints discovered in Hebei
More than 4,300 dinosaur footprints have been discovered in Zhangjiakou, North China’s Hebei province, the most found in one
From the footprints, scientists can
1 . 听双语新闻—填词
Dinosaur footprints discovered in Hebei
More than 4,300 dinosaur footprints have been discovered in Zhangjiakou, North China’s Hebei province, the most found in one
From the footprints, scientists can