silurian period

常見例句

In the Ordovician, Silurian Period, the Devonian, Carboniferous, the advent of low amphibians and ancient ancient reptiles.
在奧陶紀(jì)、志畱紀(jì)、泥盆紀(jì)、石炭紀(jì)，相繼出現(xiàn)低等魚類、古兩棲類和古爬行類動(dòng)物。
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The first fossil records of vascular plants—that is, land plants with tissue that carries food—appeared in the Silurian period.
最早的導(dǎo)琯植物（即帶有運(yùn)載食物組織的陸地植物）的化石記錄出現(xiàn)在志畱紀(jì)時(shí)代。
But as the ecosystem recovered after the freeze, it expanded, with land plants becoming common over the course of the Silurian period.
但在冰封之後，隨著生態(tài)系統(tǒng)的複原，其範(fàn)圍也隨之?dāng)U大，其結(jié)果是在Silurian期陸生植物變得更爲(wèi)普遍。