数週間

several weeks, a few weeks

数 number; quantity + 週 week + 間 during; while
noun Uncommon #17,290
several weeks, a few weeks 数 means “several” here; the exact number of weeks is unspecified.
JA: 数週間ここに滞在します。
EN: I’ll stay here for a few weeks.

数週間だけだよ

Only for a few weeks.

— ROMA/ローマ (2018)

あと数週間は滞在するつもりだよ。

I plan to stay for a few more weeks.

サラは母親の死後数週間元気がなかった。

Sarah was feeling down for several weeks after her mother died.

彼は数週間東京に滞在するだろう。

He will probably stay in Tokyo for a few weeks.

私達はその植物を数週間詳しく研究した。

We studied the plant in detail for several weeks.

首相は数週間以内に辞任すると発表した。

The prime minister announced that he would resign within a few weeks.

ラッフルズで食事したければ、数週間前に予約しなければならない。

If you want to dine at Raffles, you have to make a reservation several weeks in advance.

彼の死は数週間発表されなかった。

His death was not announced for several weeks.

数週間かな

Maybe a few weeks.

— アバウト・タイム ~愛おしい時間について~ (2013)

彼は数週間共同募金運動に奉仕した。

He volunteered for a community fundraising campaign for several weeks.

数週間後には死んでいった

A few weeks later, he died.

— オッペンハイマー (2023)

彼がショックから立ち直るのに数週間かかった。

It took him several weeks to recover from the shock.