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The effects of different concentrations of arsenic on spore germination and rhizoid and prothallium growth of Pteris vittata under aseptic condition were studied.

研究无菌条件下不同浓蜈蚣草孢子萌、和原叶体生长育影响。

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原声例句
优山

The most important of the larger species are woodwardia, aspidium, asplenium, and, above all, the common pteris.

大的种中最重要的 woodwardia、aspidium、asplenium，尤其尾蕨。

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优山

The broad-fronded, hardy Pteris aquilina, the commonest of ferns, covers large areas on the floor of the Valley.

宽叶、耐寒的蕨类 Pteris aquilina 最常见的蕨类， 覆盖了山谷底部的大片区域。

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