impact crater

基本解釋

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.
科學(xué)家要從文博尼亞馬之地提取巖石樣本，以便確認這是不是一個隕石，以及它是什麼時候形成的。
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.
南極的艾肯特盆地陷入月球表麪8英裡，稱得上是太陽系內(nèi)最大的撞擊形成環(huán)形山，那裡可能存在著冰塊形式的水。
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.
做到這點，理論上我們可以通過研究一個巨大的撞擊坑，比如南極AK盆底，它位於月球南極地區(qū)。

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