Toad remained a long while plunged in thought.

癞蛤蟆托德陷入沉思许久。

youdao

Take my word for it, I'll give you a lesson that you'll remember for a long while.

相信我的话，我会给你一个教训，你会记得很久。

youdao

We see each other once in a long while.

我们偶尔见面。

《新英汉大辞典》

"There may be enough to eat for a while." he says, "but before too long there may be hunger."

VOA: special.2010.04.13

They are trying to make sense of the tragedy that has befallen them, how a text like Joshua 23 and Joshua 24 would go a long way towards explaining their fate while retaining faith in Yahweh.

他们想要解释降临在他们身上的悲剧，章节如《约书亚书》第23和24章就花很大力气,来解释他们的命运，同时保持对耶和华的信仰。

耶鲁公开课 - 旧约导论课程节选

Yes-- for a while, but not for long.

是的，更快乐一段时间并不长久。

哈佛公开课 - 幸福课课程节选

In front of the mirror she stared at herself thoughtfully for a long while.

NEWYORKER: Miracle Polish

For a long while it was about struggling to survive, struggling to get better.

WSJ: Designer Rick Owens's Paris Home | WSJ. Magazine May 2013

That moment is unlikely to result from a bold diplomatic initiative for a long while.

ECONOMIST: War and diplomacy in Syria