Animals are multicellular eukaryotes – complicated lifeforms, that consume organic material, breathe oxygen and live now as the varied and complex creatures we see all around us.

动物是多胞真核生物，这些的生命形式，以有机物为食物，呼吸氧气，并以我们所见的形式多样的生物而存在。

There are so many different kinds of seaweed, there's unbelievable genetic diversity in seaweed, and they're very ancient; they were some of the first multicellular organisms ever to evolve.

海洋中有很多不同种类的海藻，存在着不可思议的遗传多样性，而它们非常古老；它们属于最先进化的一部分多胞生物。

They're very old, evolutionarily speaking, and likely resemble some of our first multicellular ancestors.

从进化的角度来看，它们非常古老，很可能我们最早的多胞祖先相似。

With oxygen's role in releasing energy, enabling the release of lots of energy through chemical reaction, it's more useful for animals, and probably led to the evolution of multicellular organisms.

由于氧气在释放能量方面的作用，使其能够通过化学反应释放大量的能量，所以它对动物更有用，可能还导致了多胞生物的进化。

Animals are eaters, movers, sexual reproducers, and multicellular... ers.

它们能吃，能走，能进行有性繁殖，并有多胞。

First, they all start as single-celled zygotes — made from a sperm cell and egg cell combo — that become multicellular embryos: the tiny beginnings of roots, stems, and leaves.

首先，它们都是从单胞受精开始的——由精子胞胞组合而成——然后变成多胞胚胎：根、茎叶的微小开端。

Even further down at 3,600 meters is the deepest point that a multicellular organism has been found alive — this freaky looking worm.

再往下3600米深处，是目前发现有多胞生物生存的最深处——这种看起来怪怪的蠕虫。

But last summer, an underwater vehicle peeked beneath shelves of volcanic rock in the Pacific and found a bustling community of multicellular organisms.

但今年夏天，一辆水下探测器在太平洋的火山岩层下窥探，发现了一个热闹的多胞生物群落。

Communicating over large distances over time is a problem all multicellular life has had to solve, and it's an incredibly old one.

随着时间的推移，远距离的交流是所有多胞生命都必须解决的问题，而这是一个非常古老的问题。

At some point, these cells began to form small groups or communities, which lead to multicellular life, and finally, to you.

渐渐，这些胞开始形成小组或群体，导致了多胞生命，最终形成了你。

A genome is the haploid set of chromosomes in a gamete, or microorganism, or each cell of a multicellular organism.

基因组是指配子、微生物或多胞生物每个胞中的单倍体染色体组。

Ultimately, it gives rise to a sophisticated system of cooperation that's somewhat like a multicellular organism in itself.

最终形成一个、精致的合作系统，有些类似于多胞生物。

The tentacled Archaean uses proteins common to multicellular organisms and might lend insight into how the latter evolved.

这种有触角的太古代微生物使用多胞生物共有的蛋白质，这可能有助于我们了解后者进化的方式。

Several years ago, Albani and his team discovered it held the oldest fossils know of multicellular animals.

几年前，阿尔巴尼他的研究小组发现这里保存着已知的最古老的多胞动物化石。

Some people have even suggested that there could be multicellular life, such as fish-like creatures down there.

一些人甚至推测这些寒冷星球上还可能有多胞生命，比如说像鱼一样的生物。

And they can do it because they're multicellular, which is a rarity in the microbial world.

它们之所以能够做到这一点，是因为它们是多胞的，这在微生物世界中很少见。

But we humans, along with the rest of the multicellular animal kingdom, are substantially more complex.

但是我们人类其他多胞动物一样，要得多。

And this isn't just the case for humans — it's true of every animal, plant, and fungus, and nearly every multicellular organism on Earth.

而这不仅仅是人类的情况——每种动物、植物真菌，以及几乎所有地球上每个多胞的生物体都是如此。

Before that, there was pretty much no multicellular life on land at all — animals all lived in water because, well, that's where the food was.

在此之前，陆地上几乎没有多胞生物——动物都生活在水里，因为食物就在水里。

Multicellular organisms, then larger animals, could now evolve thanks to this new element, essential for keeping these increasingly complex biological machines running.

多亏了这个新元素，多胞生物更大的动物才得以进化，这个元素对维持这些日益的生物机器运转至关重要。