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in turn

in succession; one after the other:

順番に, 正しい順序で; 次々と, 1人1人

e.g. four men prayed in turn.

(also in one's/its turn) used to convey that an action, process, or situation is the result or product of a previous one:

今度は; 今度は逆に

e.g. he would shout until she, in her turn, lost her temper.