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this and that; this or that; one thing or another; this way and that
around; about; round about; roughly; nearly; almost
決断を先延ばしにしてあれこれ悩んでも仕方がない。
It is useless to worry about this and that.
好奇心旺盛な彼女はあれこれ細かく質問してきた。
She asked me this and that.
あれこれ考えすぎて眠れなかった。
I could not sleep from thinking too much.