Like, lycophytes were huge three hundred million years ago — literally.

比如，3 亿年前，石物是巨大。

Horsetails and tree ferns grew to heights of fifty feet, club mosses to a hundred and thirty.

杉叶藻和桫椤l5米高度，石40米高度。

He divided the mosses into six genera: Mnium, Hypnum, Polytrichum, Bryum, Sphagnum and Lycopodium — classifications that are useful today.

他把藓类分为六个属：提灯藓属、灰藓属、金发藓属、真藓属、泥炭藓属和石属，分类在今天仍然有用。

Some lycopods are still around today, like the low-lying, water-loving club mosses and quillworts.

一石类物至今仍然存在，比如低矮、喜水卷柏和瓶尔小草。

But it did just fine feeding on the seed ferns and lycophytes that were common during the Triassic, no teeth required.

但它在三叠纪时期以常见种子蕨和石为食，完全不需要牙齿。

The bugs in question can be curbed by adding either of two substances to cattle feed, a chemical called 3-nitrooxypropanol, or a seaweed called Asparagopsis taxiformis.

所讨论细菌可以通过向牛饲料中添加两种物质中任意一种来控制，两种物质分别是名为3-硝基氧丙醇化学物质或名为石类红藻(Asparagopsis taxiformis)海藻。

This is because scale trees were a type of plant called lycopods, which originated way back in the Silurian Period -- before seeds were even a thing!

是因为鳞木目是一种称为石类物，它们最早出现在志留纪——那时种子都还没出现呢！

It was a lovely soft September afternoon — a day to lie under a Roman stone-pine, with one's eyes on the sky, and let the cosmic harmonies rush through one.

那是一个可爱而柔和九月午后——一天躺在一棵罗马石下，双眼望着天空，让宇宙和谐在其中奔腾。

But lycopods were also the earliest vascular plants, which means they were the first plants to contain xylem, a special tissue that moves water and nutrients from the roots to the leaves.

但是， 石类也是最早维管物，意味着它们是第一批含有木质部物，木质部是一种特殊组织， 负责将水分和养分从根部运输叶子。