By contrast, Paris has for years enjoyed a network of five RER rapid cross-city underground lines.

与此不同，巴黎多年来都一直享受着由5条快速地下城铁组成的交通网络带来的便利。

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The relative expansion rate(RER)of leaves increases at the EG phase, but gradually reduces at the LSG and SCG phases.

叶片相对扩展速率（RER）在指数生长阶段迅速增加，但在线性生长和稳定生长阶段则逐渐减小。

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RER derived vesicles were involved in the transport of protein from the site of synthesis (RER) to the site of accumulation.

RER产生的小泡在蛋白质从合成部位向积累部位运输中起着重要的作用。

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At first, the RER became the different sized vesicles, then, the ribosomes on the little vesicles began to fall, and finally, the RER turned to the concentric round lamellar structures.

粗面内质网先裂解为大小不同的小泡，尔后小泡上的核糖体开始脱落，直至变成同心圆状板层结构；

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At first, the RER became the different sized vesicles, then, the ribosomes on the little vesicles began to fall, and finally, the RER turned to the concentric round lamellar structures.

粗面内质网先裂解为大小不同的小泡，尔后小泡上的核糖体开始脱落，直至变成同心圆状板层结构；

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