单词：Silurian period
[网络] 志留利亚纪
Silurian period的用法和样例：
例句
- Ancient plant in the early Paleozoic marine mainly to the late Silurian Period, the original plants begin boarding land.古植物在古生代早期以海生藻类为主，至志留纪末期，原始植物开始登上陆地。
- Silurian志留纪的
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