原生物

例句：

1. 1. The study of prokaryotes is crucial for understanding the origins of life on Earth.
   研究原核生物对于理解地球上生命的起源至关重要。
2. 2. Prokaryotes are often found in extreme environments where other organisms cannot survive.
   原核生物通常存在于极端环境中，其他生物无法生存。
3. 3. In recent years, scientists have discovered many new species of prokaryotes that couldbe used as biofuel sources.
   近年来，科学家们发现了许多新的原核生物物种，这些物种可以作为生物燃料的来源。