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Ethyl phenylacrylate intermediate bringing a double bond was introduced first,which is subsequently transformed into triketone and then DCM was obtained with high purity.

采用具有烯烃β-苯基丙烯酸酯为中体先引入双键,合环制备乙烯基吡喃。

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新课标人教版高中英语(必修3)

The water flows into the Niagara River and over the falls on its way to the sea.

经过瀑布,海。

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头脑特工队2

You still have about ten years, two graduations, and a best friend's wedding before you're invited.

你还有约10年的时间,经过两次毕业和一场闺蜜的婚礼,你才会受到邀请。

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海底两万里(原版)

For a fare of twenty francs, the vehicle went down Broadway to Union Square, took Fourth Ave.

马车从百老汇路直到团结广场,经过第四号路到包法利街的十字路口。

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精选英语短文

In one chamber, air could be sprayed with water, before moving through plates that acted as filters to take out dust.

在一个腔室里,空气经由水雾加湿,经过过滤器板来除尘。

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当月 CNN 10 学生英语 2021年10月合集

They believe that if they have, it won't transit or cross in front of its star again for another 70 years.

他们认为,如果有的话,在接下来的70年里,它不会经过或穿过它的恒星。

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Moby Dick audiobook 《白鲸记》有声书

Go from Corlears Hook to Coenties Slip, and from thence, by Whitehall, northward.

先从柯利亚斯·克走到柯恩梯斯·斯立甫,从那边经过怀特豪尔朝北走去。 What do you see?

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英语专八阅读真题2008-2022

Once again, a proven program is worth pondering: national service.

一次,一个经过验证的方案值得深思:国民服役。

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CGTN

Water from the Padma River is pumped to the main plant, where it goes through 5 processes including filtration and disinfection, before it becomes purified water.

来自博多河的河水会先被抽送到主厂,经过过滤、消毒5道工序,最后制成净化水。

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美食家基地

The secret is their signature jalapeno mash, which is perfectly ripened jalapeno peppers that are salted and then aged for two to four weeks, to accentuate the fruity flavours.

秘诀在于他们招牌的墨西哥辣椒泥,这用完全成熟的墨西哥辣椒经过盐腌制,经过两到四周的陈酿,以突出水果的味道。

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双语版 TED-Ed 演讲精选

But even then, it took another hundred years for an accurate description of blood flow to emerge, and two hundred more for the theory of the Four Humours to fade.

但即便如此,还了一百年的时间才出现对血的正确描述,经过两百多年,四体液学说才慢慢消失。

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一先令蜡烛(上)

So you take one of the three roads, and after passing two more signposts that don't take any notice of Whatsit, you come to one that says Whatsit, six and three-quarters.

因此,您选择了三条路中的一条, 经过两个完全没有注意到 Whatsit 的路标后, 您来到了一条标有 Whatsit, 六又四分之三的路标。

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经济学人-科技

The waves are then reflected back from areas where there is a change in density and on their return the transducer works in reverse, producing a signal which the scanner can process into a digital image.

超声波会从密度发生变化的介质反射回来,这时压电式换能器会反操作产生信号,经过扫描器的处理,最后进行数字成像。

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湖底女人(上)

From this angle I could see that his service porch gave on a flight of painted wooden steps to a sloping concrete walk and a flight of concrete steps ending in the paved alley below.

从这个角度, 我可以看到他的服务门廊从一段涂漆的木台阶延伸到一条倾斜的混凝土步道, 经过一段混凝土台阶终止于下面的铺砌小巷。

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当月 CNN 10 学生英语 2019年9月合集

I think this is the first time we have real hardware of something that is capable, with a little evolution, of - - of being something that could create a self-sustaining city on Mars and a base on the moon.

我认为这我们第一次拥有真正的硬件,这些硬件经过一定的发展,也许我们就可以在火星上建立一个自我维持的城市,并在月球上建立一个基地。

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Crash Course 解剖生理学篇

So there's essentially a traveling pool of urea that escapes the urine, finds its way back into the loop of Henle, and then runs the whole course again back to the collecting duct — an ammonia-scented cycle called urea recycling.

这就形成了一个动的尿素池尿素从尿液中逸出,找到了回到亨利氏袢系统的路,然后经过整个过程回到收集管道——这个散发着氨香味的循环叫做尿素回收。

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