名词
中文翻译：卵黄膜
同义词：
['ovolemma', 'yolk sac membrane']
例句：
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1.The yolk membrane is the outermost layer of the egg that surrounds the developing embryo.
卵黄膜是包围胚胎发育的外层蛋壳。
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2.During fertilization, the yolk membrane breaks down to allow the sperm to penetrate.
受精时，卵黄膜破裂以允许精子穿透。
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3. The yolk membrane acts as a barrier between the egg and the environment, protecting the developing embryo from external factors.
卵黄膜作为蛋与外界环境之间的屏障，保护胚胎免受外部因素的侵害。