Wait 30 to 60 minutes or however long it takes.

等30到60分钟，或需要的不管多长的时间。

《柯林斯英汉双解大词典》

He cannot master it, however long he plays.

不管他弹多久，他总是学不会。

youdao

But however long it takes, the technology has the potential to change our transportation systems.

但是，无论需要多长时间，这项技术都有可能改变我们的交通系统。

youdao

(THE BEACH BOYS - "ALL SUMMER LONG") However,for some teenagers, summer vacation was not all fun and games.

VOA: special.2009.06.22

That car stage or that car slice if we want to talk about that way it has only been around for however long months, years, a year.

那辆车的阶段或者部分,如果我们非要分析的话,只能持续很短时间,几个月，几年，或者一年。

耶鲁公开课 - 死亡课程节选

Sometime it will just stop in the middle of a tunnel for however long.

有时候，地铁会久久地停在隧道的中间。

纽约的交通手段 - SpeakingMax英语口语达人

Few countries see flows of their own citizens, however large or for however long, as migration.

ECONOMIST: Migration statistics

But he does want to be respected for however long contestants are on his show.

FORBES: Trump's TV Negativity: Do Not Try This On Your Own.

Customers can borrow one per month and can keep them for however long they like.

FORBES: Good News For Amazon Prime Members: 'Harry Potter' Coming Soon To The Kindle Library