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one week
一いち週間しゅうかんの出張しゅっちょうから戻っもどったばかりだ。
I just got back from a one-week business trip.
一いち週間しゅうかんあれば十分じゅうぶん準備じゅんびできると思うおもう。
I think one week is enough to prepare.
風邪かぜで一いち週間しゅうかんほど学校がっこうを休んやすんだ。
I was absent from school for about a week due to a cold.