n. 变换( conversion的复数形式 ); （宗教、信仰等）彻底改变; （尤指为居住而）改建的房屋; 橄榄球（触地得分后再把球射中球门的）附加得分
英文释义
n. an event that results in a transformation
n. a change in the units or form of an expression: "conversion from Fahrenheit to Centigrade"
n. a successful free throw or try for point after a touchdown