anaesthetize       
verb [ T ] (UK usually anaesthetise); ( US usually anesthetize) uk/əˈniːs.θə.taɪz/ us/əˈnes.θə.taɪz/
 施以麻醉
to give anaesthetic (= a substance that makes you unable to feel pain) to a person or animal
  My doctor said I will not need to be anaesthetized during the procedure. 医生说我在手术过程中不需要被麻醉。 
 Making sure the patient is fully anaesthetized before commencing the operation is immensely important. 确保病人在手术开始前被完全麻醉是非常重要的。 
 See: anaesthetist
 - More examples
 - The bear was shot with a dart to anaesthetize and sedate her so she could be transported to the forest preserve.
 - Why have you not anaesthetized the patient and cleaned her wounds?
 - The doctor anaesthetized my eye and gave me some eye drops which are helping a lot.