impact crater

基本解释

Scientists have to sample the rock in the Wembo-Nyama feature to confirm whether or not it is an impact crater and when it formed.
科学家要从文博尼亚马之地提取岩石样本，以便确认这是不是一个陨石，以及它是什么时候形成的。
The South Pole's Aitken Basin, an eight-mile deep gouge in the lunar crust, ranks as the largest impact crater in the solar system, and could hold water in the form of ice.
南极的艾肯特盆地陷入月球表面8英里，称得上是太阳系内最大的撞击形成环形山，那里可能存在着冰块形式的水。
We could do this in theory by studying an enormous impact crater, known as the South Pole AK basin. It's located in the moon's south polar region.
做到这点，理论上我们可以通过研究一个巨大的撞击坑，比如南极AK盆底，它位于月球南极地区。

His discovery of coesite, which became a standard sign of an impact crater, sealed the debate.
ECONOMIST: Gene Shoemaker
The iridium, and the end of the dinosaurs, she believes, were caused by another impact whose crater has yet to be located.
ECONOMIST: Some new ideas about why life on Earth has periodic crises
The moment most people were persuaded that the dinosaurs were killed by an impact was when the crater in Mexico was shown to have been created 65m years ago, at the end of the Cretaceous period.
ECONOMIST: Some new ideas about why life on Earth has periodic crises