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单词 sexine
释义

sexine

/ˈnɛksɪn/ /ˈnɛksʌɪn/ /ˈnɛksiːn/
Botany
noun
In the wall of a pollen grain or spore: the outer layer of the exine, which has a distinctively sculptured surface.

Origin

1940s. From s- + exine. Compare nexine.

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更新时间:2025/2/23 23:30:17