There are five kingdoms: animals, plants, fungi, chromists—including one-celled plants such as diatoms—and protozoa, or one-celled organisms.
归有五个界：动物界、植物界、真菌界、茸鞭生物界——包括单细胞植物，如硅藻——和原生动物界，或单细胞生物体。
In short, all living things are developments from these one-celled organisms. They have developed step by step through change upon change from these first, simple, living things.
简而言之，所有的生物都是这些单细胞生物体的后代，它们是从这些最早的、简单的生物体经过逐步演变进化而来的。
In short, all living things are developments from these one-celled organisms. They have developed step by step through change upon change from these first, simple, living things.
简而言之，所有的生物都是这些单细胞生物体的后代，它们是从这些最早的、简单的生物体经过逐步演变进化而来的。
应用推荐