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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 coastguard was alerted.
海岸警卫队已接到报警。
Dangerous undertows make swimming unsafe along most of the coastline.
由于存在着危险的下层逆流，在大部分海岸线附近游泳都不安全。
Conclusion Radix panacis quinquefolii isn't evidence cochlea toxicity for guinea pig.
结论高丽参对豚鼠无明显的耳毒性作用.
Shall I prepare the guest room for Mr Cockup, my lord?
要我为您的小弟弟准备客房吗, 大人?
As It'strikes, the cobra holds on tight, ensuring the venom finds its mark.
在袭击时, 眼睛王蛇绷紧身体, 以确保毒液找到目标.
The fire reached the coco - nut palms by the beach and swallowed them noisily.
烈火已经烧到了海滩边的椰子树林,毕毕剥剥地吞噬着椰子林.
How can ability differentiate cobaltic bake in a pan bake porcelain tooth?
怎么样才能鉴别钴烙烤瓷牙?
Cobalt - based alloy is a kind of important materials used in elevated temperature.
钴基合金是一种重要的高温材料.
The oil washed ashore on roughly 1,000 miles of coastline.
石油沿着海岸线扩散到了大约1,000英里范围的沿岸海域。
The coatings with dye are rinsed in water for 10 seconds.
含有染料的涂层用水洗10秒钟.
It took a lot of coaxing before he agreed.
劝说了很久他才同意.
Objective To explore the problems related to cochlear implantation.
探讨人工耳蜗植入术的有关问题.
With the approach of winter the weather came coder.
随着冬天的接近.天气变得更冷了.
Don't get cocky when you've achieved something.
别一有成绩就翘尾巴.