同根派生 amphitropous ovule相关词英汉例句The ovule is unitegmic,tenuinucellate and anatropous.薄珠心，單珠被，倒生胚珠，蓼型胚囊。Frequently the basal ovule, which is the last one to be fertilized would abort.最後受精的基生胚珠經常敗育。amphitropous ovule更多例句