In SSAX, by contrast, every node descends from a parent, passing and returning a seed.

与此相对比，在SSAX中，每个节点都来自一个父节点，传递并返回一个seed。

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These very short-lived plants reproduce prolifically; that is to say they provide a constant rain of seed in the neighborhood of parent plants.

这些寿命极短的植物大量繁殖；也就是说，它们在母株周围持续提供着“种子雨”。

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This paper reviewed the strategies of producing male sterility by gene engineering and new ways for the reproduction of male sterility lines use as a female parent in hybrid seed production.

本文综述了利用生物技术培育转基因雄性不育的多种策略，以及繁育用作大田配制杂交种的母本雄性不育系的新方法；

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