fer·til·iz·er /-ˌaɪzɚ/
  肥料,受精媒介物
  Fer·ti·lizer n.
  1. One who fertilizes; the agent that carries the fertilizing principle, as a moth to an orchid.
  2. That which renders fertile; a general name for commercial substances which make plants grow better, as manure, guano, phosphate of lime, ammonium nitrate, etc.
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  fertilizer
       n : any substance such as manure or a mixture of nitrates used
           to make soil more fertile [syn: fertiliser, plant food]