1·In addition, over 30 tons of meteoritic iron in small chunks covered the plain when Europeans first discovered the crater.
此外，当欧洲人第一次发现火山口十，超过30吨的金属铁块被平原覆盖了。
2·Scientists think the glass was fused in a meteoritic impact 30 million years ago, making it rare and luminous enough to befit a king.
科学家认为这种玻璃是由3000万年前的陨石冲击地面融溶而成，它的珍稀和光亮足以适用于国王。
3·Carbon has two non-radioactive isotopes, and in material from the solar system, including most meteoritic minerals, these are mixed in a well-known ratio.
碳有两个非放射性的同位素，在太阳系的物质中，包括在大多数的陨石矿石中，它们的混合比例是众所周知的。