Pliocene Period

例句：

1. 1. The Pliocene Period saw the rise of mammals and the extinction of many plant species.
   白垩纪时期见证了哺乳动物的兴起和许多植物物种的灭绝。
2. 2.The discovery of fossils from the Pliocene Period has helped scientists understand Earth's past climate changes.
   白垩纪时期的化石发现帮助科学家理解了地球过去的气候变化。
3. 3. During the Pliocene Period, the Earth's climate was characterized by warm temperatures and abundant rainfall.
   在白垩纪时期，地球的气候特征是温暖且降雨丰富。