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单词
megasporangium
释义
DEFINITIVE EXAMPLES 权威例句〔nucellus〕The central portion of an ovule in which the embryo sac develops; the megasporangium.珠心：胚珠的中心，胚芽囊在此发育；大孢子囊美国传统
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right over movables
right over things
Right Parenthesis
right parenthesis
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