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A generation ago genetic codes were certainly unknown.是什么意思？

A generation ago genetic codes were certainly unknown.

遗传密码在上一代确实很少有人知道.

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
Objective : To identify gene mutation in a family with Weber - Cockayne type epidermolysis bullosa simplex ( WC - EBS ).
鉴定单纯型大疱性表皮松解症Weber -Cockayne 亚型 一家系中的基因突变位点.
The nerve cells of the cochlea then die and permanent deafness results.
耳蜗神经元细胞就会死,导致耳聋.
In the present study, gradients of gentamicin along the cochlea were measured.
在目前的研究之中, 可以测量庆大霉素沿着耳蜗的浓度梯度分布.
He recognized the coast of England through a veil of mist.
透过薄雾他认出了那是英格兰的海岸线。
The coastguard cutter cruised along the coast looking for smugglers.
水上警察缉私船沿海巡逻搜寻走私犯.
A species of cockroach sprays a substance , ethylacrolein, that is a kind of tear gas.
某种蟑螂喷射一种催泪性毒气――乙 基丙烯 醛.
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.
These tests clearly show in coater group drying, is of paramount importance.
这些测试清楚显示在涂布机组间的干燥, 极为重要.
He is too cocky, Let's cut him down to size.
他太骄傲了.让我们揭穿他的底细.
The pair of them were both blinded by their own cockiness.
他们两个人都因为自己的狂妄而变得盲目。
the cocoon of a caring family
家庭中相互关爱所形成的保护
The stupid cocotte drove him mad.
那个无聊的妓女使他发了狂.
Yeah. How about corn on the cob?
好的. 烤玉米怎么样?
Are you a coder?
你是一位程序员 吗 ?