1. 1〔代わり合うこと〕taking turns;〔勤務の時間分割〕a shift
    • 世代の交替
    • the change of generations
    • 昼夜交替で
    • by day and night shifts
    • その工場は3部交代制である
    • The factory operates on three shifts.
    • 彼らは4時間交替で働く
    • They work 「in shifts of four hours [on four-hour shifts]./They are relieved every four hours.
    • 交替で見張る
    • keep watch by turns
    • 妹と交替で部屋の掃除をする
    • My sister and I take turns (in) cleaning our room.
  1. 2〔入れ替わり〕a change
    • 監督は投手を交替させた
    • The manager changed pitchers.
    • 私は彼と交替した
    • I took his place./I relieved [took over from] him.
    • 総会で役員の交替が行われた
    • The members of the board were changed [replaced] at the general meeting.
    • 彼は夜間の交替員だ
    • He is on the night shift.
  1. 交替組〔昼の〕the day shift;〔夜の〕the night shift
    • 交替時間は何時ですか
    • When will you be relieved?/When is your shift over?
  1. 交替制a shift system
    • ここは(三)交替制になっている
    • We work on (three) shifts here.