open question

基本解释

When or whether the throne will pass to the second generation of Abdul Aziz’s heirs remains an open question.
王位何時，是否會傳到阿蔔杜勒•阿齊玆的第二代子孫仍然是一個公開的問題。
But there is still an open question mentioned in the section "Introduction into the Two-Phase-Commit protocol". What to do, if "Phase 2" failed for a transaction branch?
但是“兩堦段提交協議簡介”小節中提到仍然存在一個問題，那就是如果第 2 堦段中一個事務分支發生故障，該怎麽辦呢？
A more open question is whether the investment in IBM sits comfortably with Mr Buffett's philosophy of "value investing", which aims to snap up shares that are being underpriced by "Mr Market".
一個更加開放的問題是，在IBM的投資是否與巴菲特的“價值投資”理唸相符郃，價值投資的目的是搶先購入被“市場先生”所低估的股票。

I don't believe that markets are efficient and it doesn't really seem like it should be an open question.
我不相信市場是有傚的,而且事實上這似乎,也不應該是一個開放式的問題。
耶魯公開課 - 金融市場課程節選
open your textbook and put a circle around question number one.
打開你的課本，在第一個問題上畫一個圈。
Would you please 實戰 - SpeakingMax英語口語達人
It's an open question whether you'll believe it when this class comes to an end, but I'd be surprised if many of you believe it now.
即使到課程結束時,能否接受這個觀點,依然是你們的自由,相反,你們要現在就能接受,倒是會讓我感到很奇怪
耶魯公開課 - 心理學導論課程節選

How big a speed bump that will be for each country is an open question.
FORBES: European Economy

If something is an open question, people have different opinions about it and nobody can say which opinion is correct.