单词	astrobleme
释义	astrobleme /ˈastrəʊbliːm / noun Geology An eroded remnant of a large crater made by the impact of a meteorite or comet.Large craters, called astroblemes, are frequently hidden by the earth's own natural processes.... Although relatively young meteorite impact craters have been identified in Argentina and Chile, these two Brazilian structures are the first ancient astroblemes to be reported from South America. Dating back 2.023 million years, the Dome is the oldest astrobleme still visible on earth and site of the world's greatest known single energy release. Origin 1960s: from Greek astron 'star' + blēma 'wound'.
随便看	pirl pirl grass pirlie pirling pirn pirnie pirog pirogi pirogue piroot piroplasm piroplasma piroplasmosis piroshki pirouette pirouetter pirouettist pirozhki pirozhok Pirquet pirr pirre pirri pirrie pirrie wind

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