这使单细胞生物产生了一种原始形式的视觉能力，使他们能够根据光亮和阴暗进行移动，它也使生物产生了一种控制电势的能力。
This gave them a crude form of vision, allowing them to move in response to light and shade, but also brought into biology a way of controlling electrical potential.
单细胞生物大约出现于34亿年前的“原始汤”（primordial soup）。
Single-celled organisms emerged from the primordial soup about 3.4 billion years ago.
沟鞭藻为单细胞的原始的海洋生物。
Dinoflagellates are single-celled and primitive Marine organisms.
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