在刘和他的团队对那里的岩石进行勘察的过程中，他们发现了70多个类似足迹的斑点——在沉淀物中的一些浅痕，其周边有轻微的突起。
As Mr Liu and his team explored the rocks they came across more than 70 markings that looked like tracks-slight impressions in the sediment with tiny ridges sticking up along the sides.
在刘和他的团队对那里的岩石进行勘察的过程中，他们发现了70多个类似足迹的斑点——在沉淀物中的一些浅痕，其周边有轻微的突起。
As Mr Liu and his team explored the rocks they came across more than 70 markings that looked like tracks - slight impressions in the sediment with tiny ridges sticking up along the sides.
刘启超的一个同学李怡然（音）今年18岁，是一个开朗的年轻人。 他估算，他们所在的杨村一中全部学生中，超过四分之一是所谓的“复读生”。
One of his classmates, Li Yiran, a cheerful 18-year-old, estimated that more than one-fourth of the seniors at their secondary school, Yangcun No. 1 Middle School, were "restudy" students.
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