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单词 pollen tube
释义 pollen tubeBrE /ˈpɒlən tjuːb/NAmE /ˈpɑːlən tuːb/ noun (biology 生物) a tube that grows when pollen lands on the of a flower to carry the male cell to the stigma of a flower to carry the male cell to the ovule (= a part of the female organ) of a flower to carry the male cell to the ovule (= the part that contains the female cell) 花粉管
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