Translation

細菌 / バクテリア / 複数の細菌

Meaning

Bacteria are tiny single-celled organisms. The word is plural; the singular is bacterium. Not all bacteria are harmful, because many live harmlessly or help digestion, food production, and ecosystems.

Examples

• 一部の細菌は病気を引き起こします。
  Some bacteria cause disease.
• ヨーグルトには有益な細菌が含まれています。
  Yogurt contains helpful bacteria.