评论
打印
n. 观察，观察力，评论
adj. 被设计用来
您现在的位置： 首页 > 英语听力 > 英语视频听力 > 纪录片 > 《恐龙灭绝真相》纪录片 > 正文
- The objection was based on one simple observation, earth has been hit many times...
- 这种异议基于一个简单的发现，地球已经遭受过多次碰撞，
- and these impacts, even the really big ones, seldom coincide with mass extinctions.
- 而这种碰撞，哪怕是最大的碰撞，都很少与物种大灭绝相关联。
- For the very large craters that we think might have produced global effects,
- 我们通常认为那些巨大的陨石坑会造成全球性的影响，
- in some cases they don't line up with any extinction events whatsoever
- 但是一方面它们没有关系到任何一次灭绝事件，
- and in other cases extinction events, very well dated extinction events
- 另一方面，就清楚记载的灭绝事件而言，
- have occurred that are not associated with any impacts.
- 它们的发生都与碰撞无关。
- Because of this, some scientists had long doubted that any impact could have wiped out the dinosaurs
- 基于这个原因，一些科学家一直都在怀疑究竟是不是大碰撞导致了恐龙消失，
- and now there is new evidence which seems to reinforce those suspicions.
- 现在他们的疑虑有了新的证据作为支撑。
- The new evidence relates to the forest fires that were said to have raged all over the world.
- 这些新的证据，与据说肆虐了整个世界的森林大火有关。
- They seem to have been supported by soot in the KT boundary layers,
- 支持该理论的证据是存在于第三纪界线层中的烟灰，
- but the problem with soot is that it can be blown thousands of miles from where the burning actually happened,
- 但是烟灰有可能是从实际发生火灾的数千英里之外被吹到这里来的，
- so one researcher decided to investigate a more reliable kind of evidence... charcoal!
- 所以一位研究人员决定着手调查一种更为可靠的证据：木炭！
扫描二维码进行跟读打分训练
- 阅读本文的人还阅读了：
可可英语官方微信(微信号:ikekenet)
每天向大家推送短小精悍的英语学习资料.
添加方式1.扫描上方可可官方微信二维码。
添加方式2.搜索微信号ikekenet添加即可。
添加方式1.扫描上方可可官方微信二维码。
添加方式2.搜索微信号ikekenet添加即可。
