Military officials are still tight-lipped about when or whether their forces will launch a ground offensive.

军官们对于什么时候以及是否发动地面进攻依然守口如瓶。

《柯林斯英汉双解大词典》

There's still no consensus on how much time online constitutes too much or whether addiction is possible.

对于上网时间多少算多，或者是否可能导致上瘾，目前尚未达成共识。

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However it was unclear to researchers whether unemployment caused poor health, or whether poor health led to job loss.

VOA: special.2009.06.09

Or whether or not they had no idea what they were doing, and they've given themselves over to this process.

还是说诗人并不完全理解自己写的文字，而是在创作过程中完全超然忘我。

普林斯顿公开课 - 人性课程节选

or whether that means listening to the English radio on a headset

要么意味着戴耳机听收音机里的英文节目。

想征服英语的话 - SpeakingMax英语口语达人

Sather wouldn't speculate on them or whether anyone currently employed by the Rangers would be considered.

WSJ: Rangers fire coach John Tortorella

This is not a discussion of who receives subsidies or whether they are warranted.

FORBES: Further Implications Of The U.S. Ethanol Tariff

It is unclear who did it or whether it was related to the campus trouble.

BBC: Jaffna University Tamil students boycott classes