Fossils of the oldest-known plant with a stem were found in the same area.

在同一地区还发现了已知最古老有化石。

It's got like a purple... a purple stem.

它有一个紫色。

It's got a similar vibe to the stem, except its vascular tissue is clustered in the center of the root.

它和有相似感觉——除了它维管组织聚集在根中心。

I made my way to my healthy tomato plants and took comfort in their rough stems and fuzzy leaves.

我走正在健康生长着西红柿，摸着它们粗糙和有绒毛叶子，我深感欣慰。

They also have the can one where it's like, not with the ridges, it's more of the whole, and you'd get, I don't know, it's like... that's okay, but I feel like there's like stems in there or something.

他们还有那种没有凹槽，整一些，你拿在手里，我不太知道怎么说，就是… … 还行吧，但我感觉里面好像有什么。

Of course the plants in these colonies also need tough resilient stems above the soil, stems that can bent a lot but not break as water constantly crashes into them.

当然，这些群落中还需要土壤上方坚韧有弹性， 这些可以弯曲很多但不会因为水不断冲入而折断。

Crinoids became the most abundant echinoderms of the Ordovician, and some were the ancestors of today's stalkless feather stars and stalked sea lilies.

海百合成为了奥陶纪最丰富棘皮动，其中一些是今天无羽状海百合和有海百合祖先。