Understanding of these dinosaurs is not any guessing people, but scientists have many in-depth study of dinosaur fossils are made on the basis of scientific conclusions.

 
  • 对于这些恐龙的认识,并非是人们的任意猜测,而是科学家们在深入研究许许多多恐龙化石的基础上作出的科学结论。
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