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1·This type of reaction has signicant advantages, the alkyne proceeds the coupling reaction with the halogen atom as the leaving group.

卤原子作为炔烃三键活化基团和定位基，炔烃三键发生亲电加成反应；

2·Conclusion The 3, 5-dinitrobenzoyl group was found to be a good leaving group at the anomeric position and O-glucopyranosides and oligosaccharides were stereoselectively synthesized in good yield.

结论3，5 二硝基苯甲酰氧基作为良好的糖端基离去基用于寡糖的合成，具有反应条件温和、收率较高、立体选择性好的特点。

3·One advantage of a conglomerate is that it allows the ambitious to graduate from one company to another without leaving the group.

大型联合企业的一个优势就是允许那些雄心勃勃的人不需要离开集团就能在不同的公司任职。

4·A change in elites can also be expensive, with the outgoing group snatching what it can before leaving and the incoming group working overtime to ensure that it too gets paid in full.

经营层的变更代价也是巨大的，离任的集团在离开之前会竭尽全力攫取一切利益，继任者也会致力于确保他们能获得最大的利益。

5·Some have found employment in the city’s financial and services sectors and prospered, leaving behind a small group with severe social and health problems.

其中某些人已在城市的金融和服务部门找到工作，并且已经兴旺发达，逐渐脱离社会和健康问题严重的小群体。

6·Today, I found out that I'm 8 weeks pregnant. Tomorrow, I'm supposed to be leaving for Paris with my college abstinence group for a year.

今天我发现我已经怀有8周的身孕——不过按照计划，我明天就得跟我们“禁欲小组”一起去巴黎一年。

7·The half of the group in ZhengZhou didn’t have a problem leaving the campus, but they had similar issues with their school’s administration.

（我们这个队伍中）留在郑州那里的老师想到学校外面去（看看）倒是没有问题，但大家所面对的学校的管理规定都差不多。

8·On its tour of Europe InterContinental Hotels Group has visited many countries, leaving behind a hotel or two in each as a lasting reminder of its visit.

洲际酒店集团已经来到了很多欧洲国家，并在每个国家建造一到两座洲际酒店作为访问的永久留念。

9·Ms. Kuo grew up in Yili, near the border with Kazakhstan, and worked for the Marriott hotel group in Shanghai for many years before leaving to start her business.

罗女士是在与哈萨克斯坦接壤的伊犁长大的，在开创自己的事业之前，曾在上海万豪酒店工作多年。

10·After that, however, additional tyrannosaur relatives were slow to surface, leaving important details about the group unknown.

然而从那以后，霸王龙其他的亲戚们也渐渐的浮出水面，为这未知物种提供了有巨大研究价值的资料。