在四川自贡，这个全球发掘和保存侏罗纪恐龙化石最多的地方，我们找回了一亿六千万年前恐龙演化史中遗失的那块拼图。
In Sichuan' s Zigong, the place with the world' s largest excavation and preservation of Jurassic dinosaur fossils, we' ve uncovered the missing piece in the 160-million-year-old puzzle of dinosaur evolution.