英语听力：探索发现 2014-05-23 BBC 地平线：陨石的真相-6
时间：2019-01-23 作者：英语课 分类：探索与发现2014年
英语课
Meteor strikes as big as this may be rare butscientists have a surprisingly detailed 1 knowledge of what meteorites 3 are andwhere they come from.
Long before the meteorite 2 reached its explosivefinale in full view of Chelyabinsk’s dash cams, it had a very differentexistence and going by a very different name.
Meteorites begin life in deep space as part of muchlarger bodies called asteroids 5. These can range in size from just a few metresto more than 900 kilometres, the leftovers 6 from the nebula 7 that created oursolar system some 4.6 billion years ago. And millions of them circle the Sun ina trail known as the asteroid 4 belt. Here, collisions create smaller fragmentsand when these fall towards Earth, they take on one of two forms. The smallestpieces will burn up in the atmosphere to become meteors, what we call shootingstars. Only the largest fragments that make it all the way to the Earth’ssurface are called meteorites.
The meteorite is a piece of rock from space or apiece of metal from space that falls through our atmosphere and actually hitsthe ground to be recovered. And technically 8, scientists love their words, it’snot a meteorite before it’s actually found and discovered.
adj.详细的，详尽的，极注意细节的，完全的
- He had made a detailed study of the terrain.他对地形作了缜密的研究。
- A detailed list of our publications is available on request.我们的出版物有一份详细的目录备索。
n.陨石；流星
- The meteorite in Jilin Exhibition Hall is believed to be the largest in the world.吉林展览馆的陨石被认为是世界上最大的。
- The famous Murchison meteorite smashed into the Australian ground in 1969.1969年著名的默奇森陨石轰然坠落在澳大利亚。
n.陨星( meteorite的名词复数 )
- Small meteorites have left impact craters all over the planet's surface. 这个行星的表面布满了小块陨石留下的撞击坑。 来自《简明英汉词典》
- One theory about the existence of extraterrestrial life rests on the presence of carbon compounds in meteorites. 地球外存在生命的理论是基于陨星上存在碳化合物质这一事实的。 来自《简明英汉词典》
n.小行星；海盘车(动物)
- Astronomers have yet to witness an asteroid impact with another planet.天文学家还没有目击过小行星撞击其它行星。
- It's very unlikely that an asteroid will crash into Earth but the danger exists.小行星撞地球的可能性很小，但这样的危险还是存在的。
n.小行星( asteroid的名词复数 )；海盘车，海星
- Asteroids,also known as "minor planets",are numerous in the outer space. 小行星，亦称为“小型行星”，在外太空中不计其数。
- Most stars probably have their quota of planets, meteorids, comets, and asteroids. 多数恒星也许还拥有若干行星、流星、彗星和小行星。
n.剩余物，残留物，剩菜
- He can do miracles with a few kitchen leftovers.他能用厨房里几样剩饭做出一顿美餐。
- She made supper from leftovers she had thrown together.她用吃剩的食物拼凑成一顿晚饭。
n.星云，喷雾剂
- A powerful telescope can resolve a nebula into stars.一架高性能的望远镜能从星云中分辨出星球来。
- A nebula is really a discrete mass of innumerous stars.一团星云实际上是无数星体不连续的集合体。
adv.专门地，技术上地
- Technically it is the most advanced equipment ever.从技术上说，这是最先进的设备。
- The tomato is technically a fruit,although it is eaten as a vegetable.严格地说，西红柿是一种水果，尽管它是当作蔬菜吃的。