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1.The cell is a basic unit of biological organization.
细胞是生物组织的基本单位。
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2.The study of cells helps us understand the workings of the human body.
研究细胞有助于我们理解人体的工作方式。
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3. Cell division is essential for the growth and development of all living organisms.
细胞分裂对于所有生命有机体的生长和发展都是必要的。