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several months
数すう箇月かげつの研修けんしゅうを受けうけた。
I received several months of training.
数すう箇月かげつぶりに友人ゆうじんと再会さいかいした。
I reunited with a friend after several months.
この計画けいかくは完成かんせいするまでに数すう箇月かげつかかる見込みみこみだ。
This plan is expected to take several months to complete.