That makes it the biggest known crater in our solar system and it may wellbe the oldest.
这使它成为太阳系中已知最大的陨石坑,也可能是最古老的陨石坑。
2
It may be just graffiti, but considering thatit comes from the most well-known scientists in the world, its credibility will definitely increase.
它也许只是随意涂鸦,但考虑到它来自世界上最知名的科学家,其可信度就必然会有一定的增加。
3
It will never beknown how and when this numeration ability developed, but it is certain that numeration was well developed by the time humans had formed even semi-permanent settlements.