世界的な全面核戦争が起これば、地球規模でこの「核の冬」が数カ月間も続くと言われています。

tbd

If there's a world-wide all-out nuclear war it's said that there will be a "nuclear winter" all over the planet for several months.

北極熊は、生きていくために体を適温に保ち、数日か数ヶ月もあくかもしれない食事の間持ちこたえられるだけの十分なエネルギーを蓄えねばならない。

tbd

To survive, the polar bear must keep its body at the right temperature and store enough energy to last between meals that could be a few days or a few months apart.

彼女は数ヶ月来はじめて悲しく思った。

tbd

She was sad for the first time in months.

彼が恋に落ちたその女の子は数ヶ月後、彼のもとを去った。

tbd

The girl with whom he fell in love left him after a few months.

数ヶ月前にスカッシュを始めたばかりなんだ。

tbd

I took up squash only a few months ago.

私はこの数ヶ月間自分一人で生活していた。

tbd

I've been on my own these past few months.

I was on my own during these months.

私が日本に滞在したのはほんの数ヶ月だった。

tbd

I stayed in Japan only a few months.

私が日本に滞在したのはほんの数ヶ月だが、その間に次から次へと苦しい目にあった。

tbd

I stayed in Japan only a few months, during which time I went through a series of hardships.

ビルは常に静かで、家庭を大事にする男だったが、新しい地位について数ヶ月後には性格が変わってしまった。

tbd

Bill had always been a quiet, home-loving man, but after a few months in the job, his personality changed.

それは数ヶ月で忘れられるでしょう。

tbd

It'll be forgotten in a few months' time.