The reason why he was late is unknown yet.
他为什么迟到的原因不清楚。
But, who is behind the scenes, unknown yet.
然而，幕后黑手到底是谁，仍不得而知。
Whether the singer can come or not is unknown yet.
那个歌手是否能来不知道。
Previously, Edward was concerned about the fate of those being trapped, but he said that it still unknown yet whether the soil slided down inside the mine.
此前，爱德华担心那些被困人员的命运，但他说，尚不清楚矿井内部是否发生了滑坡。
Post tensioned prestressed concrete hollow slab(PTPCHS) is one of high strength prestressed concrete hollow slab, and its construction performance is still unknown yet.
后张预应力混凝土空心板是一种高效预应力空心板，目前国内尚未对其结构性能进行系统研究。
A real and pressing issue is that many plant species have not yet been cataloged, and so their place in the ecosystem is unknown.
一个现实而紧迫的问题是，许多植物物种还没有被编目，因此它们在生态系统中的位置是未知的。
But other components, as yet unknown, must surely be involved.
但是其它未知的部位肯定也要包含在内。
The waving of the boughs in the storm, is new to me and old. It takes me by surprise, and yet is not unknown.
暴风中树枝摇曳，这景象我既熟悉又陌生，它令我惊讶，却又不是未知。
Rabban Bar Sauma (c. 1220-1294) is the Marco Polo of the East, and yet is relatively unknown.
拉班·巴·索玛(c. 1220—1294)是东方的马可·波罗，但是相对来说还是鲜为人知的。
Gagarin's flight on the Vostok was entirely automated, yet simply by having the courage to face the unknown, he taught his fellow humans a vital lesson: that they had a future in space.
Gagarin搭乘沃斯·托克号的飞行完全自动控制的，让我们有勇气面对未知世界，他给身边的人上了至关重要的一课：人类在太空拥有未来。
So far, humanity has only recorded sunrises on Mars and Earth, but it is fun to wonder what they would look like on planets known and yet unknown.
到目前为止，人类只记录下了火星和地球上的日出，但是猜想那些已知和未知的行星上的日出是一件非常有趣的事情。
I was an unknown foreigner, and could have easily evaded payment with impunity, yet no London shopkeeper ever mistrusted me.
我是一个没人知道的异乡人，本可以大胆地轻易逃避付款，但是从来没有一个伦敦的店主不信任我。
And the terms of the contracts are still unknown; firms cannot start doling out cash on the strength of them.Ministers have yet to say how cost overruns will be met, for one thing.
合同的具体条款现在还不清楚，公司不可能仅靠自己的力量就把资金发放出去，一方面，部长们还没有表明超过成本的花费如何支付。
The editors were behaving handsomely, Martin concluded. He was wholly unknown to them, yet some of them had even been sympathetic.
马丁的结论是编辑们做得都很漂亮，他们谁都不认识地，可有几个对他还颇表同情。
I suspect the realities of living on a warming planet with a spiraling population and dwindling resources will remain unknown for some time yet.
我觉得人类生活在一个日益变暖的星球，人口螺旋式增长而资源不断减少，这一现实或许还需时日才能为人所知。
Or there may be an as yet unknown cause of some cardiovascular pathology.
也可能有某种至今未知的原因导致心血管疾病。
Or there may be an as yet unknown cause of cardiovascular pathology.
亦或，存在一种至今仍不为人们所知的引发心血管疾病的病因。
In polling carried out in March, some 47% of registered voters said they would like to re-elect Mr Obama, with just 37% saying they would vote for an as-yet-unknown Republican candidate.
3月份进行的民意测验中，47%的已登记选民说，会继续给奥巴马投票，仅有37%的选民说，他们会将票投给尚未知晓的共和党候选人。
The former is any user who is casually browsing the site, but is as yet unknown to the system.
前一个角色可以是任何随意浏览站点的用户，但系统不能识别它们。
Sony apologized over the weekend and the damage to its gaming business is as yet unknown.
上周末索尼公司公开道歉，这次事件给索尼游戏产业带来的危害尚无从得知。
Sportsman said, “It makes me feel relaxed yet mysterious, so I always come here before my exam to regain my interest in fields unknown to humans.
运动员摆弄着屋子里的瓶瓶罐罐回答：“这里又神奇又轻松，所以考试前我都要到这里来，把被考试破坏的对未知领域的兴趣找回来。”
There's also the potential for finding unknown treasures. By some estimates, as much as 75 percent of the site has yet to be excavated.
而且也存在发现未知宝藏的可能性，据估计，还有75%的遗迹未被发掘。
The scale and scope of the losses are as yet unknown.
损失的规模和范围仍然不得而知。
Yet another plane restaurant, location: unknown.
然而，另一架飞机餐厅，地点：不明。
“Human beings have trouble coming to terms with the unknown, ” Mr. Taylor said. “Growing old is a great unknown in the lives of everyone who is not yet old.”
“人类对于未知的情境总是存在忧虑”Taylor先生说，“对于尚未变老的人来说，变老是生活中一个巨大的未知。”
“Human beings have trouble coming to terms with the unknown, ” Mr. Taylor said. “Growing old is a great unknown in the lives of everyone who is not yet old.”
“人类对于未知的情境总是存在忧虑”Taylor先生说，“对于尚未变老的人来说，变老是生活中一个巨大的未知。”
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