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| Prokaryotes lack organelles such as nucleoli, mitochondria, plastids, Golgi apparatus, and do not exhibit cyclosis. |
中文意思：
原核生物无细胞器，如核仁、线粒体、质体、高尔基体等，不出现胞质环流。 |
以下为相关句子列表(点击查看，可以看对应的解释）：
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Projects vary yearly and have included design and testing of strategies for daylighting, passive heating and cooling, and improved indoor air quality via natural ventilation.
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实验专题每年不同，包括采光、被动式暖房与冷房、藉以改善室内空气品质的自然通风等设计与实验策略。 |
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Projects ~s are among the safest, most liquid, and least known tax-free investments.
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工程证券属于最安全、流动性最强、而又最不为人所知的免税投资项目之列。 |
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Prokaryote (prokaryote) An organism whose genetic material (DNA) is not enclosed by membranes to form a nucleus but lies free in the cytoplasm.
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原核生物：指遗传物质（DNA）没有被膜包围形成细胞核，而是在细胞质中游离存在的一类生物体。 |
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Prokaryote cells evolved first and gave rise to eukaryote cells.
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原核细胞先产生，而后产生真核细胞。 |
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Prokaryotes constitute the kingdom Bacteria (formerly the Prokaryotae).
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原核生物组成细菌界（原先为原核生物界）。 |
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Prokaryotes lack organelles such as nucleoli, mitochondria, plastids, Golgi apparatus, and do not exhibit cyclosis.
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原核生物无细胞器，如核仁、线粒体、质体、高尔基体等，不出现胞质环流。 |
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Proletarian revolutionaries always cleave to Marxist-Leninist principles.
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无产阶级革命者永远忠于马列主义的原则。 |
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Proliferating cell nu clear antigen (PCNA) plays a vital role in regulating cell replication, repair, and death, and is found in an altered form in breast cancer cells.
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增殖细胞核抗原在细胞应答、修复及死亡的调控中起着重要作用，并被发现其在乳癌细胞中出现形态改变。 |
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Proliferation News and Resources. Carnegie Endowment for International Peace.
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核武扩散相关新闻和资料，卡内基国际和平基金会。 |
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Proliferation of cells in a ring around the feather germ creates a cylindrical depression, the follicle, at its base.
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环绕羽芽有一圈细胞不断增生，在基部形成圆柱状凹陷，称为毛囊。 |
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Prolific painting or marking with ink.
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有墨水的画或印记。 |
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