1.陨星;陨石;陨铁
1.a piece of rock that has fallen from space and landed on the ground
1.It quickly became clear, however, that the isotopic composition of meteorites differed not at all from that of the Earth itself.
然而事情很快清楚了，陨石中的同位素比例与地球自身没有什么不同。
2.An extremely small percentage of meteorites (far less than one in a thousand) do not show strong attraction to a magnet.
陨石（远远超过了千分之一的）的一个非常小的比例不显示磁铁强大的吸引力。
3.About one in every 20 meteorites that falls on the surface of the Earth is probably a bit of Vesta.
落在地球的陨石中，每二十块中就约有一块可能来自灶神星。
4.Meteorites are rare, but out of the thousands of inquires we have received, a number have turned out to be genuine.
陨石是罕见的，但我们已收到数以千计的查询，这个数字竟然是真正的。
5.Sometimes in weathered or broken meteorites, the chondrules may be exposed and evident on the surface.
有时，在风化或破碎的陨石，陨石可能暴露的和表面上的明显。
6.These have been associated with iron meteorites, are usually reddish and thought to be fragments of the cores of much larger objects.
与铁陨星存在许多联系，后者通常呈淡红色，被认为是更大星体的核碎片。
7."Our scientists are excited, " he said. "Russian planetary scientists are already collecting meteorites from this event. "
“我们的科学家感到很兴奋，”他说。“俄罗斯行星科学家已经在收集这次事件的陨石标本了。”
8.Meteorites are rocks, usually containing a great deal of extraterrestrial iron, which were once part of planets or large asteroids.
陨石是一种石头，通常含有大量的地外铁物质，这些物质曾经都是行星和大型小行星的一部分。
9.Meteorites contain a great deal of extraterrestrial iron, even the ones that look like terrestrial rocks (stony meteorites).
陨石包含一个很大的外星铁，即使是那些看起来像陆地岩石（石陨石）。
10.But most of the meteorites that hit the earth's atmosphere melt or break up in the air.
但大多数撞在地球大气上的陨石融化或在空气中破碎了。