N-COUNT
(活動或體制的)轉變，變更，過渡
A changeover is a change from one activity or system to another.
例句
He again called for a faster changeover to a market economy...
他再次呼吁加快向市場經濟過渡。
Right now we are in the changeover period between autumn and winter.
眼下，我們正處于秋冬交替的時候。