fertilize  
verb [ T ] (UK usually fertilise) uk/ˈfɜː.tɪ.laɪz/ us/ˈfɝː.t̬əl.aɪz/
  (LAND)     
  施肥
to spread a natural or chemical substance on land or plants, in order to make the plants grow well
   (EGG/SEED)      
 使受精;使受孕;使受粉
to cause an egg or seed to start to develop into a new young animal or plant by joining it with a male cell
  Bees fertilize the flowers by bringing pollen. 蜜蜂通过传播花粉使花朵受粉。 
 Once an egg is fertilized by the sperm, it becomes an embryo. 卵子受精后即成胚胎。