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桥二环辛烷不给出有意义的桥头取代.用英语怎么说？

桥二环辛烷不给出有意义的桥头取代.

Bridged bicyclooctanes gave no significant bridgehead substitution.

相关词汇
bridged gave no significant bridgehead substitution

bridged

v. 在…建桥( bridge的过去式和过去分词 )；

gave

v. 给予，赠送( give的过去式 )，（与名词连用描述某一动作，意义与该名词相应的动词相同），供给，交给；

no

adv. 不，否，一点也没有；adj. 没有的，不许的，一点儿也没有，决不是的；n. 不，否定，否认，反对票，否决票；abbr. 数字(number)，元素锘(nobelium)的符号；

significant

adj. 重要的，显著的，有重大意义的，意味深长的；

bridgehead

n. 桥塔，桥头堡；

substitution

n. 代替，代用，替换，<化>取代（作用）；
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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。
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。
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。
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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The bridegroom ended his speech by proposing a toast to the hosts.
新郎向主人敬酒结束了他的讲话.
Breathe out and ease your knees in toward your chest.
呼气，膝部放松向胸部靠拢。
They're headed for the breezeway on the north side.
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She could hear his ragged breathing, as if he had been running.
她能听到他不均匀的呼吸声，似乎他是跑着过来的。
The bricklayer on the roof was calling for more tiles.
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Briary: Describes young wines with an earthy or stemmy wild berry character.
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He tried to bribe the policeman not to arrest him.
他企图贿赂警察不逮捕他.
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