carbocyclic compounds three-and four membered rings

it is not necessary to wait until half of a sample has decayed in order to measure the halflife.

不必一直等到样品衰变一半之后才测量它的半衰期。

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" all right, then, " betttie said. " i'll get it from the yankees at harpers ferry. "

贝蒂说：“那好，我到哈波斯渡口北方军哪里去弄。”

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this week in our series, we tell what happened to john brown after he seized harpers ferry.

本周，我们向你讲述约翰.布朗占领哈珀斯镇之后的故事。

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he sent a force of marines to harpers ferry, under the command of army colonel robert e. lee.

他派遣一支海军向哈珀斯镇进发，这支海军由罗伯特.E.李上校指挥。

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this week in our series, we continue the story of john brown and his raid on harpers ferry.

本周，我们继续向你讲述约翰.布朗和他进攻哈珀斯的故事。

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without firing a shot, brown now controlled the three places he wanted in harpers ferry.

布朗未放一枪就控制了在哈珀斯镇他想控制的三个地方。

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harpers ferry was part of virginia then; today it is located in west virginia.

哈珀斯镇是当时维吉尼亚州的一部分，现在属于西维吉尼亚州。

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at harpers ferry, the soldiers stared in surprise at the old farmer and the girl.

在哈波斯渡口上，士兵们惊异的看着老农和年轻的姑娘。

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control of charles town changed hands 18 times while another town in the valley, harpers ferry, changed hands eight times.

查尔斯城曾经易手18次，而另一个位于河谷内的城镇哈普斯渡口则曾经易手8次。

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they would call for help. and several groups of militia in the area would come to the aid of harpers ferry.

在这一地区有几支民兵力量将会来援助哈珀斯。

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the harpers, and aunt polly's family, were being put into mourning, with great grief and many tears.

哈帕家和波莉姨妈家都沉浸在悲哀之中，哭声不断。

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then the officials asked why brown had come to harpers ferry.

随后，这些官员们又问布朗，为什么要来到哈珀斯镇。

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the colonel was a descendant of president george washington. he lived on a big farm near harpers ferry.

刘易斯.华盛顿上校是美国第一任总统乔治.华盛顿的后代，他住在哈珀斯镇附近的一座大农场。

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in october of eighteen fifty-nine, a group of anti-slavery extremists attacked the town of harpers ferry.

1859年10月，一群反奴隶制的极端分子袭击了哈珀斯镇。

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the raid on harpers ferry increased the bitterness of the national dispute over slavery.

约翰.布朗的这次起义激化了美国国内有关奴隶制的争论。

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then-foreign affairs minister david emerson attended in mr. harpers place, but the decision left mr. harper in a minority among g8 leaders.

当时外交部部长大卫-爱默生代替哈珀先生出席（北京奥运会），哈珀先生留下参加少数8国峰会。

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many harpers dwell in neverwinter, as do a few skilled dwarven craftspeople of note.

绝冬城里居住着许多竖琴手，还有少量不可忽视的矮人工匠。

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not one slave had come to harpers ferry to help brown.

没有一个奴隶到哈珀斯镇来帮助约翰.布朗。

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this foundation is just one of the many areas where the harpers have impacted flexo education.

这个基础就是其中一个地区的哈泼斯已经影响柔印教育。

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a few minutes later, a train from the west arrived at harpers ferry. the wounded guard warned the train men of the danger at the bridge.

几分钟后，一列从西开过来的火车到达了哈珀斯，这名受伤的看守警告列车员，桥上危险。

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