单词：the Paleozoic
n. Paleozoic的变形
the Paleozoic的用法和样例：
例句
- My professor studies flora of the Palaeozoic Era.我的教授研究古生代的植物群。
- On this basis the paleogeographical changing process during the Paleozoic in the eastern Qinling is discussed.在此基础上探讨了东秦岭古生代古地理变迁过程。