释义 |
DEFINITIVE EXAMPLES 权威例句〔chalaza〕Botany The region of an ovule that is opposite the micropyle, where the integuments and nucellus are joined.【植物学】 合点:珠孔对面的胚珠内结合珠被和珠心的一个区域美国传统〔ovule〕Botany A minute structure in seed plants, containing the embryo sac and surrounded by the nucellus, that develops into a seed after fertilization.【植物学】 胚珠:种子植物的一个小的结构,含有胚囊并被珠心所包围,施肥后长成种子美国传统 |