以下为句子列表：
英文: At the end of February, the bract attained approximately their full size, and a pair of anatropous ovules were initiated on the adaxial surface at the base of the fertile ovuliferous scale.
中文: 2月底，苞片体积不再发生变化，珠鳞膨大端的基部的近轴面分化出2个倒生胚珠。
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英文: Bract scale The structure found in large numbers in the female cone of gymnosperms, each bearing an ovuliferous scale in its axil.
中文: 苞鳞：在裸子植物的雌球果中大量存在的结构，每个苞鳞都包含一个珠鳞。
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英文: For example，the spiral arrangement of scale-bract complexes on ovule-bearing pine cones，where the female reproductive or**s of conifers are located，is important to the production of airflow patterns that spiral over the cone's surfaces，thereby passing air
中文: 例如，带有胚珠的松球的鳞苞综合体的螺旋状安排，亦即松柏目植物雌性殖器官的所在位置，对于气流模式的形成与产生殊为重要，而这些气流模式在松球的表现盘旋上升，从而把在空气中飞行的花粉从一个鳞苞传播至下一个鳞苞。
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英文: For example，the spiral arrangement of scale-bract complexes on ovule-bearing pine cones，where the female reproductive organs of conifers are located，is important to the production of airflow patterns that spiral over the cone's surfaces，thereby passing ai
中文: 例如，带有胚珠的松球的鳞苞综合体的螺旋状安排，亦即松柏目植物雌性殖器官的所在位置，对于气流模式的形成与产生殊为重要，而这些气流模式在松球的表现盘旋上升，从而把在空气中飞行的花粉从一个鳞苞传播至下一个鳞苞。
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英文: Cloning and Analyzing of Bract Differentially Expressed Genes of Davidia Involucrata Baill
中文: 珍稀濒危植物珙桐（Davidia involucrata）苞片差异表达基因的克隆与分析
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