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卵细胞成熟时，有卵外膜，结构复杂。
The mature ootid has the outer membrane with complex structure.
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卵室内含有不同发育阶段的卵母细胞。
The egg Chambers contain the oocyte at different development phases.
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卵室内含有不同发育阶段的卵母细胞。
The egg Chambers contain the oocyte at different development phases.
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