名词
中文翻译：细胞膜
同义词：
['cell wall', 'plasma membrane例句：1. The cell envelope is the first barrier of protection for the cell.（细胞膜是细胞的第一道保护屏障。）']
例句：
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1. The cell envelope is the first barrier of protection for the cell.
细胞膜是细胞的第一道保护屏障。
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2.The study of cell envelopes has led to new insights into cellular function.
研究细胞膜的研究为理解细胞功能提供了新的见解。
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3.The cell envelope is made up of lipids and proteins that help to maintain the integrity of the cell.
细胞膜由脂质和蛋白质组成，有助于保持细胞的完整性。