| 1. | Cretaceous - tertiary extinction event
白垩纪-第三纪灭绝事件 |
| 2. | What makes those creatures survive the extinction event is a mystery
这些生物怎麽活过大灭绝的不得而知。 |
| 3. | Devonian biostratigraphy of dushan , southern guizhou and its coral extinction events
贵州独山泥盆纪生物地层以及珊瑚的四次灭绝事件的研究 |
| 4. | Once , lives on earth are reshuffled by extinction events , but the evolution never stops
曾经，地球上的生命因遭遇灭绝而重新洗牌，但演化从未停下脚步。 |
| 5. | Modern birds are the only group of mesozoic birds to have survived after the k / t extinction event , and recent ornithurine discoveries lend further support to the cenozoic origin of the modern avian groups
现生鸟类是白垩纪与第三纪之交绝灭事件发生之后的幸存类群，近来今鸟类的新发现也进一步支持了现生鸟类起源于新生代的推论。 |
| 6. | While this may be the first time in history that a single species can precipitate a mass extinction event , it is also the first time in history that a single species can act to prevent it
一个单一物种能够导致大规模的物种灭绝，这可能是历史上的第一次；同时，一个单一物种能够采取行动来阻止这种变故的发生，同样也是历史上的第一次。 |
