translation.en: People assumed -- and this was actually a problem -- people assumed that if they had little dinosaurs, if they had juvenile dinosaurs, they'd be easy to identify.
translation.zh: 人们假设——这也正是问题所在 人们假设 如果小恐龙、或者说幼年时期的恐龙 真的存在的话 应该很容易被辨别出来