For things that have had contents with volatile oil like thinners they should be left for a few days to completely evaporate it before being disposed of as non-flammable waste.
このオファーは5日間有効です。
This offer is open for five days.
来週二日間の休みを取るつもりです。
I am going to take two days off next week.
明日で5日間雪が降り続くことになる。
It will have been snowing for five days tomorrow.
母はこの三日間病気で寝ていません。
My mother hasn't slept in 3 days due to her illness.
母がこの2日間病気なの。
My mother has been sick for two days.
彼女は友達とヨーロッパに十日間の旅をした。
彼女は滞在を5日間延ばした。
She extended her stay by five days.
彼女は数日間そのホテルに滞在した。
She stayed at the hotel for several days.
彼女は10日間トイレやシャワーなしで過ごした。
She spent ten days without a toilet or shower.
彼は友達の車を数日間借りた。
He borrowed his friend's car for a few days.
彼は数日間休暇を取っている。
He is off work for a few days.
彼は数日間意識不明であった。
He was unconscious for several days.
彼は三日間無意識の状態だ。
He has been unconscious for three days.
彼は解答する前に2日間熟考した。
He meditated for two days before giving his answer.