utilization       
noun [ U ] (UK usually utilisation) uk/ˌjuː.tɪ.laɪˈzeɪ.ʃən/ us/ˌjuː.t̬əl.əˈzeɪ.ʃən/
 利用
the act of using something in an effective way
  Sensible utilization of the world's resources is a priority. 合理利用世界上的资源是一个优先事项。 
 Resource utilization and cost-effective therapy are an integral part of modern medical practice.  资源利用和具有成本效益的治疗是现代医疗实践中不可分割的组成部分。 
 See: utilize
 - More examples
 - We should be promoting renewable fuels and increased utilization of public transportation.
 - Removing subsidies on energy will ease resource utilization rates.
 - By optimizing memory utilization your computer will operate at stable speeds and never run out of memory.