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The cause of autism is unknown.是什么意思？

The cause of autism is unknown.

自闭症的病因尚不清楚.

相关词汇
the cause of autism is unknown

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

cause

n. 原因，动机，理由，事业；vt. 成为…的原因，导致，引起，使遭受；
例句
Poor posture can cause neck ache, headaches and breathing problems.
姿势不当会导致颈部疼痛、头痛和呼吸困难。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；
例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

autism

n. 孤独症，自我中心主义；
例句
The cause of autism is unknown.
自闭症的病因尚不清楚.

is

vt.& vi. 是（be的三单形式；n. 存在；
例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

unknown

adj. 未知的，不出名的，从未发生的，从不存在的；n. 不知名或不出名的人，未知的事物，<数>未知数，未知数；
例句
It is not unknown for valuable display items to go, ahem, missing.
贵重的展品，呃哼，丢失的话，会众人皆知。
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
Supporters of the death penalty argue that it would deter criminals from carrying guns...
死刑的支持者认为它能阻吓罪犯携带枪支。
相关例句
Arrive two days early in order to acclimatize.
提前两天到达以便适应新环境。
The single - row four point contact ball slewing ring is composed of two seatring.
单排四点接触球式回转支承,由两个座圈组成,结构紧凑、量轻、球与圆弧滚道四点接触,能同时承受轴向力、向力和倾翻力矩.
All these old novels bear the religions and superstitious characters of the feudal society.
所有这些旧小说都具有封建社会的宗教迷信性。
The covariant equation of plane motion body in curved space - time is studied.
研究弯曲 时空 中平面运动刚体的动力学协变方程.
The demand for places at some schools exceeds the supply...
某些学校的入学申请人数超过了招生。
Imbedding reduces the number of memory locations required.
采用嵌入法可以减少所需存储单元的数目.
The cock crows in the farmyard.
雄鸡在农家院中啼叫.
March 23,1887 Prince Felix Youssoupoff was born Leonid Youssopov is modeled.
1887年3月23日,雷欧尼特·尤苏波夫的原型——菲利克斯·尤苏波夫公爵出生.
Today we are interviewing the 20 - year - old fashion designer who has taken Paris by storm.
今天我们采访的是这个20 岁 的时尚设计者,他曾让巴黎轰动一时.
The course aims to develop the children’s appreciation of music in performance.
该课程旨在培养孩子欣赏音乐演奏的能力。