n.

an event that occurs when something passes from one state or phase to another

同義詞：changemodification

the act of making something different (as e.g. the size of a garment)

同義詞：modificationadjustment

the act of revising or altering (involving reconsideration and modification)

同義詞：revision

1. The alterations to the building were necessary for safety reasons.
   對建筑的修改是出于安全原因的需要。
2. She made several alterations to her dress before the event.
   她在活動前對她的裙子做了幾處修改。