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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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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.
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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。
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Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
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她能听到他不均匀的呼吸声，似乎他是跑着过来的。
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Bridged bicyclooctanes gave no significant bridgehead substitution.
桥二环辛烷不给出有意义的桥头取代.
They riprapped the breakwater with stone.
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