Small meteorites have left impact craters all over the planet's surface. 這個(gè)行星的表面布滿(mǎn)了小塊隕石留下的撞擊坑。
UNDAUNTED BY SKEPTICISM, a handful of scientists continues to look for potential impact craters and tracers. 有一群科學(xué)家沒(méi)有因為其他學(xué)者的懷疑而喪志,繼續搜尋可能的撞擊坑與撞擊遺跡。