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遗传密码在上一代确实很少有人知道.用英语怎么说？

遗传密码在上一代确实很少有人知道.

A generation ago genetic codes were certainly unknown.

相关词汇
generation ago genetic codes were certainly unknown

generation

n. 一代人，代（约30年），时代，生殖，产生；

ago

adv. 以前，过去的，之前；

genetic

adj. 遗传的，基因的，起源的，起因的，演变的；

codes

n. [计算机]编码( code的名词复数 )，代号，密码，法典；

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

certainly

adv. 无疑，当然，确定，肯定；

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；
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。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
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。
相关例句
The contents are emptied into color-coded buckets.
东西都被倒进不同颜色的桶里。
Don't be so cocksure that he will succeed.
不要那么确信他会成功.
Coarctation of the lower thoracic aorta . [ comment ] .
缩窄下胸 主动脉.
A generation ago genetic codes were certainly unknown.
遗传密码在上一代确实很少有人知道.
Juventus are eyeing Italy U 21 pair Andrea Coda and Daniele Dessena.
尤文图斯正在关注意大利U21双星安德烈亚·柯达和丹尼尔·德塞拉.
He cleaned the flakes away with his coat sleeve.
他用大衣袖子把碎屑掸掉。
Discouraging words for those who believe that a college's job is to educate, not coddle.
对于那些认为学校的职责是教育而非溺爱的人而言,这样的话实在让人气馁.
The newspaper breached the code of conduct on privacy.
该报违反了保护隐私的行为准则。
Coca is well-known for reducing hunger, thirst and fatigue.
人们都知道可乐能消饿、止渴和解乏。
That gentleman disliked coarseness and profanity.
那位先生一向忌讳粗俗和猥亵.
The cocoanut is particular to the tropics.
椰子是热带特有的.
" Now we shall see,'said the cobbler.
“ 我们可以看到了, ” 皮匠说.
The things that stuck out were his cockiness and his four-letter words.
与众不同之处在于他的骄傲自大和满嘴脏话。
With the approach of winter the weather came coder.
随着冬天的接近.天气变得更冷了.