tranquilize /ˈtræŋkwəˌlaɪz/ ( tranquilizing, tranquilized, tranquilizes )

• 1. 

  V-T To tranquilize a person or an animal means to make them become calm, sleepy, or unconscious by means of a drug. (用药物) 使镇静; 使失去知觉

  例：

  This powerful drug is used to tranquilize patients undergoing surgery.

  这种强效的药物用于使手术中的病人失去知觉。