Some examples of word usage: Ordovician
1. The Ordovician period was a time of great diversification of marine life. (奥陶纪时期是海洋生物多样化的时期。)
2. Fossils from the Ordovician period provide valuable insight into ancient sea creatures. (奥陶纪时期的化石为我们提供了有价值的信息,揭示了古代海洋生物。)
3. The Ordovician period lasted from about 485 to 443 million years ago. (奥陶纪时期大约从4.85亿年前到4.43亿年前。)
4. Many trilobites thrived during the Ordovician period. (在奥陶纪时期,许多三叶虫繁荣起来。)
5. The Ordovician period is known for the Great Ordovician Biodiversification Event. (奥陶纪时期以伟大的奥陶纪生物多样化事件而闻名。)
6. The climate during the Ordovician period was relatively warm and stable. (奥陶纪时期的气候相对温暖稳定。)