alteration
noun
[mass noun]the action or process of altering or being altered
变更，改变
careful alteration of old buildings.
对旧房的改造。
[count noun]alterations had to be made.
必须进行修改。
派生alterative
adjective
语源late Middle English : from Old French, or from late Latin alteration (n-), from the verb alterare (see alter)