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exchange; conversion; replacement; switching (to); switchover
気持ちの切り替えが上手な人は困難から早く立ち直れる。
People who are good at switching their mindset recover from difficulties quickly.
今月末でシステムの切り替えが行われる予定だ。
The system switchover is scheduled to take place at the end of this month.
冬時間から夏時間への切り替えは毎年混乱を招く。
The switch from winter time to summer time causes confusion every year.