unclear number

基本解释

It remains unclear what is happening with the Number-3 reactor, which is fueled by a mix of uranium and plutonium.
现在还不清楚3号反应堆发生了什么情况，3号反应堆的燃料是混合的铀和钚。
Mayor Giuliano said the number of dead and injured remained unclear because the number of workers at the plant fluctuated, in part because so many subcontractors were involved.
格拉诺市长表示死亡伤病名单还没有最终确定，因为这家工厂的工人流动性很大，一部分原因是因为许多转包商都在其中。
“The number of defectors involved is unclear, ” says an activist in Homs. “But we’re seeing street fighting.”
“有多少士兵叛逃还不清楚，”一位霍姆斯的活动人员说道，“不过在街上就能看见打斗。”

The death toll topped 300 on Friday and it remained unclear what the final grim number would be.
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How much of that run was inspired by short covering is unclear, as is the number of shares still sold short.
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Although pirate attacks have at least tripled during that time period, the actual number of attacks remains unclear.
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