cratering的用法和样例：

例句

A flat-bottomed, roughly circular volcanic crater of explosive origin that is often filled with water.小火山口一种底部平坦、大致呈圆形的火山爆发后形成的盛满水的低洼地
A rim, as of a vessel, bell, or crater.边容器、铃和坑的边缘

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By VOA News 10 May 2006 Condoleezza Rice Secretary of State Condoleezza Rice said Wednesday the United States will pause in its drive for U.N. Security Council action against Iran. The break would all

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2006年VOA标准英语（五月）

英语听力：自然百科金星和水星旅行指南 Venus and Mercury-6

After Messenger's 3 fly-bys, we've now mapped more than 90% of the planet. Taken from around 124 miles, these images are the clearest to date of Mercury. And it's not hard to spot a crater of epic proportions, the result of yet another Titanic collis

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自然百科2012年

AP美联社一分钟新闻 2009-04-01

1. President Barack Obama is leaving this morning for his first overseas trip since taking office. Obama is heading out on an eight-day tour of Europe. First stop, the G20 summit in London. 2. British Prime Minister Gordon Brown says he expects diff

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PBS访谈社会系列

万物简史第274期:砰!(9)

Altogether it is thoughtthough it is really only a guess, based on extrapolating from cratering rates on the Moon, 据认为──虽然只是根据月球上形成凹坑的速度所作的一种推测， that some two thousand asteroids big enough to

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万物简史

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abductor maxillae

adiabatic condensation

atrial septal defect with cleft mitral valve