The drug can be transferred to the baby via the placenta.毒品会通过胎盘传给胎儿。Starch grains present in the embryo sac and placenta are utilized by the embryo.存在于胚囊和胎座中的淀粉粒为胚胎所利用.Funicle ( funiculus ) The stalk attaching the ovule...
Shakespeare's plays are often elaborately annotated to make them easier to understand.莎士比亚剧本往往注释详尽,便于理解....an annotated version of Mozart's opera that allows the listener to follow the score.使听者能够一边欣赏一边对照着看的莫扎特...