Meaning of 交代勤務替 in Japanese

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Definition of 交代勤務替

きんむ(kinmu) 【勤務】

かわる(kawaru) 【替わる ·代わる ·換わる ·替る ·代る ·換る】

(v5r, vi) to succeed; to relieve; to replace
ジムは、ベティーにかわって手紙を書いた。
Jim wrote the letter for Betty.
to take the place of; to substitute for; to take over for; to represent
to be exchanged; to change (places with); to switch

こうたい(koutai) 【交代 ·交替】

(n, vs) alternation; change; relief; relay; shift; substitution (sports, etc.)
我々は交替で車を運転した。
We took turns driving the car.