The evidence for the strike came 30 years ago when father-and-son geologist team Luis and Walter Alvarez studied data laid down at the time of the last dinosaurs.
30年前，Luis和Walter Alvarez这对地质学家父子，研究了最后一批恐龙遗留下来的资料，发现了了当时陨星撞击地球的证据。
The evidence for the strike came 30 years ago when father-and-son geologist team Luis and Walter Alvarez studied data laid down at the time of the last dinosaurs.
30年前，Luis和Walter Alvarez这对地质学家父子，研究了最后一批恐龙遗留下来的资料，发现了了当时陨星撞击地球的证据。
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