a headache of unknown aetiology
原因不明的头痛
He adventured on a unknown seas.
他冒险驶入陌生的海域。
Inventions unknown to antiquity.
古人所不知的发明
The details of the case is unknown.
案情未详。
The ship was adrift on unknown seas.
船在陌生的大海上漂流。
Those adventured on some unknown seas.
那些冒险家在一些不为人知的大海里冒险。
The woods aflutter with unknown birds.
森林里因有不知名得小鸟而有动静。
They came like angels out the unknown.
他们好像天使从天而降。
Where the accident occurred is unknown.
事故发生的地方还不知道。
He was an unknown painter one year ago.
一年前, 他还是一个不为人知的画家。
But he is almost unknown to the french.
但他在法国几乎算是籍籍无名。
Don't let anyone unknown into the house.
别让陌生人进入房中。
Received flowers from an unknown admirer.
从一个不知其名的敬慕者那儿收到鲜花
Those gallantly adventured on unknown seas.
那探险家们大胆地在陌生的海域探险。
The woods were aflutter with unknown birds.
树林里因有不知名得小鸟而有动静。
to express unknown quantities algebraically
代数上表示未知数
Angry, acerbic argument was virtually unknown.
这样吹胡子瞪眼睛，舌剑唇枪的激烈争吵，可以说还从未有过。
adjustment of condition equations with unknown
未知数条件平差发
Snow in Egypt is an almost unknown phenomenon.
在埃及, 下雪几乎是无人知晓的现象。
She was at the time a wholly unknown American.
她那时还是一个完全不为人知的美国人。
When this accident take place is still unknown.
这个事故在何时发生还不知道。
The nascence of that kind of animal is unknown.
那种动物的起源不为人知。
This is a group of equation. Answer is unknown.
这是一组无解方程式。答案未知。
from any and all other claims, known or unknown.
同意即代表
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