He thought he had better track this wolf and see where it lived.
他认为他最好跟踪这只狼,并看看它在哪儿生活。
It lived between 20, 000 and 50, 000 years ago in what is modern-day Ireland.
这种棕熊居住在现在的爱尔兰,大约生存在20,000至50,000年前。
It lived around 125 million years ago, based on the dating of radioactive elements in the sediments that encased the fossil.
研究者通过对包裹化石的沉积层进行放射性元素年代测定,推断出中华龙鸟生活在1.25亿年前。
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