Earth had just managed to evolve multicellular life.

地球上刚出现了多细胞生物。

This is the central problem that all multicellular creatures have to solve.

所有多细胞生物必须解决核心问题。

Type-1 is used against bacteria and viruses; type-2 against multicellular parasites such as worms.

类型1用于对抗细菌和病毒；类型2用于对抗多细胞寄生虫，如蠕虫。

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

从进化角度来看，它们非常古老，很可能与我们早多细胞祖先相似。

Early multicellular life depended on the water in which it lived to support their skeleton-less bodies.

早期多细胞生命依赖于它生活来支撑它们无骨架身体。

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

但我们人类和其他多细胞动物一样，要复杂得多。

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一点，因为它们多细胞，在微生物世界中很少见。

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

几年前，阿尔巴尼和他研究小组发现里保存着已古老多细胞动物化石。

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

一些人甚至推测些寒冷星球上还可能有多细胞生命，比如说像鱼一样生物。

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

种有触角太古代微生物使用多细胞生物共有蛋白质，可能有助于我们了解后者进化方式。

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

终形成一个复杂、精致合作系统，有些类似于多细胞生物。

By 800 million years from now, every green thing on Earth is dried up, and all multicellular life with them.

八亿年后，地球上不会有任何绿色植物，以及任何多细胞生物苟活。

Anyway, microbes banded together, creating multicellular life.

总之，微生物结合在一起，创造了多细胞生命。

Multicellular organisms are constantly shedding cells.

多细胞生物不断地脱落细胞。

The main theory is that multicellular organisms started out as cells grouped together in colonies.

主要理论，多细胞生物初细胞聚集成菌落。

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

渐渐，些细胞开始形成小组或群体，导致了多细胞生命，终形成了你。

The findings suggest that this single-celled organism is already equipped for multicellular life.

研究结果表明，种单细胞生物已经具备适应多细胞生命能力。

A lab found 350 gene families in Choanoflagellates once thought to be exclusive to multicellular animals.

一个实验室在曾被认为多细胞动物独有领鞭毛虫中发现了 350 个基因家族。

But recently, scientists discovered what is probably the oldest evidence of multicellular life that isn’t just cell colonies.

但近， 科学家们发现了可能多细胞生命古老证据，而不仅仅细胞集落。

Single cells started to band together, eventually evolving into the riot of shapes and functions of multicellular life today.

单个细胞开始结合在一起，终演变成今天多细胞生命形状和功能暴乱。