long long ago,there were some animals,some strange and odd animals in 56000000 years of the world.For example,ambulocetus,dinosaurs and many ancient animals.But they have died out.很久很久以前,在5600萬年前的世界有許多動物,有許多稀奇古怪的動物.比如陸行鯨,恐龍還有許多遠古時代的動物,但是他們現(xiàn)在已經滅絕了哦，我沒有看懂。請解釋一下好嗎？謝謝，再加上一句But scientists try to use mosquitoes find dinosaur DNA to revives them但是科學家們正嘗試著用蚊子找到恐龍DNA去復活他們

• 呵呵

正在學新概念，才學到13課，不過那個那些單詞是以前問過老師的。