Dark matter makes up about 80 per cent of the matter in the universe, but no one is sure what it's made of.
暗物质大约占宇宙的80%，但暗物质是什么构成的，却无人知晓。Takes place in the days before Christmas near a little-known border crossing on the Mohawk reservation between New York State and Quebec.
故事发生在圣诞节前夕，在纽约与魁北克之间有一个几乎无人知晓的莫霍克族居住地。As one of the most popular females in Marvel comics, it's anyone's guess as to her rightful place in the Marvel Universe.
作为惊奇漫画人物中最受欢迎的女性，她在惊奇漫画英雄中的应有地位确无人知晓。Nobody knows how much strain the ground forces can bear.
地面部队能承受多大压力，对此无人知晓。The fact that the temple had a lot of wealth was on the public record, but no one knew how much was down there.
事实上，公共记录对该寺院拥有大量财产一事有记载，但具体数额无人知晓。But nobody knows the degree to which these things drive them to the Taliban, or what sort of progress might win them to the government.
但是，无人知晓这些东西严重到何种程度才迫使他们加入塔利班组织，或者取得何种程度的进展才能将他们拉回到政府这边。The truth of the matter is you can build it, but if nobody knows about it, then they're not coming.
但事实是，你创造了它，但如果无人知晓，谁会来呢？It is often in unknown situations when boasters brag most.
自夸者往往在无人知晓的情况下吹嘘得最厉害。LONDON, AP -- A music scholar said he has identified a previously unknown portrait of Wolfgang Amadeus Mozart that could be worth millions.
伦敦，美联社--一名音乐学者证实，他发现了一幅过去完全无人知晓的莫札特肖像画；该幅画可能价值数百万元。