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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；
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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。
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If so, he would at any rate be able to deliver the cockchafer speech.
若是那样, 他无论如何也要把那一番骂人的话发泄出来.
The coco - cola frothed as it was poured out.
可口可乐 倒出来时泛起泡沫.
Anche il cobra , serpente con gli occhiali.
今天在沙漠里长出了一朵花!
the cocoon of a caring family
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Cockerel a well - thought - out plan , ask: " How to run? "
小公鸡 胸有成竹, 问: “ 怎么跑? ”
...cocoa beans.
可可豆
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别一有成绩就翘尾巴.
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.
Forest coccus blood is not bad chemical examination from what comes out?
林球菌血液可以化验出来 吗 ?
They also introduced me to Tera Thomas, friend, coauthor, and editor of Bringers of the Dawn.
他们也将我介绍给特拉?托马斯, 他是黎明的带来者朋友 、 合著者和编辑.
This is called nesting or cocooning.
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The boy spat out the pill after eating off its sugar coating.
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A generation ago genetic codes were certainly unknown.
遗传密码在上一代确实很少有人知道.
The warm stones strewed their flakes upon the cobble.
鹅卵石路上撒满温热的石头碎片.