There are many unknowns in science.
科学上还有许多未知之处。
闻的闻的人；[数]未知数
确定的;清楚的;
的，未的;名英雄明显病因的发烧There are many unknowns in science.
科学上还有许多未知之处。
Those explorers gallantly adventured on unknown seas.
那
探险家们大胆地在陌生的海域探险。
The origins of some words are unknown.
词的起源是
知的。
Our new director is still an unknown quantity.
我们对新来的主管知之甚少。
The championship was won by a complete unknown.
一个名
经传的人赢得了冠军。
Unknown to me, he had already signed the agreement.
他背着我已签了协议。
Motherhood was for her a journey into the unknown.
做母亲当时对她来说是开始一次探险之旅。
An unknown man has stolen all her money.
一个陌生人把她的钱偷光了。
Scrotal calcinosis: Is the cause still unknown?
病因是否仍清楚?
In algebra, the sign X usually denotes an unknown quantity.
在代数里, 符号X常用来表示未知数。
People usually infer an unknown fact from a known fact.
人们通常从已知的事实中推断未知的事实。
Their football team bowed out of the competition with unknown reasons.
知道为什么他们足球队退出了比赛。
Life can be likened to a journey with an unknown destination.
生活可以被比作一次知目的的旅行。
Yesterday’s riot broke out at the instigation of an unknown politician.
昨日的暴乱是由一个知名的政客煽动起来的。
Matter is an unknown somewhat .
物质是某种明的东西。
Some Austrians, ungratefully, nicknamed it the “Looter's memorial” or the “Unknown rapist”.
一奥地利人仅心怀感激，并且将它称之为“侵略者的纪念馆”或者“为人知的强奸犯”。
Her present whereabouts are still unknown.
她现在下落明。
It was unknown country to me.
地区对我说来是陌生的。
She was then still comparatively unknown.
她那时候还怎么出名。
The cause of autism is unknown.
自闭症的病因尚清楚。
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