Conversion is the act or process of changing something into a different state or form.
例句
...the conversion of disused rail lines into cycle routes...將廢棄的鐵路線改成自行車道A loft conversion can add considerably to the value of a house.將閣樓改造一下就可以使房子的價值大增。
N-VAR
(宗教、信仰等的)改變，皈依，歸附
If someone changes their religion or beliefs, you can refer to their conversion to their new religion or beliefs.
例句
...his conversion to Christianity...他皈依基督教It's hard to trust the President's conversion.總統信仰的改變讓人難以相信。
N-COUNT
(橄欖球運動中的)附加得分
In rugby, if a player makes or kicks a conversion, he scores points by kicking the ball over the goal after a try has been scored.