Why don't we get unicellular elephants, or blue whales, or brown bears?

为什么不存在单细胞的大象，或是蓝鲸，亦或是棕熊呢？

In reality, though, almost all living things are unicellular, and with good reason.

然而实际上大多数生物是单细胞的, 这是有理由的.

Life remains amazingly unicellular until November 11th when the first multicellular organisms, known as the Ediacaran fauna, come along.

直到10月11号之前，生物仍惊人地保持着单细胞的状态，这时第一种多细胞生物也就是埃迪卡拉动物群出现了。

Unicellular algae were bred in outdoor ponds.

直接在室外育苗池培养单胞藻；

Quantity of hair is large, and each is unicellular.

毛状体数量丰富，均为单细胞；

Unicellular gland - a goblet cell mucus-secreting. (H &E stain.

单细胞腺--分泌粘液的杯状细胞。

What if the key to curing blindness was found in unicellular algae?

如果在单细胞藻类中发现治疗失明的关键，会引起怎样的革新？

It may be unicellular, as in simple algae and fungi, or multicellular, as in plants.

可以是单细胞，如在原始的藻类、真菌中；或者为。

A small, light - sensitive patch of pigment in certain algae and unicellular organisms.

地球上的生命是从一些很小的单细胞生物进化而来的.

New research shows that many of these unicellular organisms can stand upright and walk.

新研究显示很多单细胞生物能够直立和行走。