the final stage of the prophase in meiosis,characterized by shortening and thickening of the paired chromosomes,formation of the spindle fibers,disappearance of the nucleolus,and degeneration of the nuclear membrane是什么意思_the final stage of the prophase in meiosis,characterized by shortening and thickening of the paired chromosomes,formation of the spindle fibers,disappearance of the nucleolus,and degeneration of the nuclear membrane在线翻译_英语_读音_用法_例句