短语词组短语campylotropous ovule [植]弯生胚珠;弯生胚珠ovule tube 胚珠管ovulum ovule 小卵epiphyllous ovule 叶生胚珠unfertilized ovule 未受精胚囊atropus ovule 直生胚珠pendulous ovule 倾下胚珠Circinotropous ovule [植]拳卷胚珠atropous ovule 直生胚珠;内生胚珠 返回 ovule