refine /rɪˈfaɪn/ star1 CET4 TEM4 (refining,refined,refines)

• 1.  

  V-T（及物动词） When a substance is refined, it is made pure by having all other substances removed from it. 提炼 [usu passive]

  例：

  Oil is refined to remove naturally occurring impurities.

  油经过提炼去除天然生成的杂质。

• 2.  

  N-UNCOUNT（不可数名词） refining 提炼

  例：

  ...oil refining.

  …炼油。

• 3.  

  V-T（及物动词） If something such as a process, theory, or machine is refined, it is improved by having small changes made to it. 完善 [usu passive]

  例：

  Surgical techniques are constantly being refined.

  外科手术技术正在不断得到完善。