Crucially, they form a barrier to exchange between groups, as anyone who has been caught up in a crowd and pulled inexorably in the wrong direction will know.
关键的一点是，拉格朗日拟序结构中的界限可以在群体间互换，正如一个人被挤进了错误的人群接着随着人群驶向错误的方向。
You can also have multiple exchange schemas in order to represent different message types or groups of different message types.
您也可以具有多个交换架构，以代表不同的消息类型或不同消息类型组。
Perhaps most menacingly, the Internet's openness allows well-organized groups to simulate support, to "capture and impersonate the public voice," as Mr. Fishkin wrote in an E-mail exchange.
也许最大的威胁是，因特网的公开性让各种有组织的团体冒充支持，以“获取和冒充公众声音，”就像菲什金先生在一封电子邮件回信中所说的那样。
The on-board equipment allows to exchange data both with mission control centers and within the aviation groups in the air in the mode of real time.
这些机载设施能够使军事作战指挥中心和航空飞行队之间进行实时数据无线传输。
Exchange groups are supposed to provide a contact person, or liaison, to help students in case they have any problems.
交换生组织为交换生提供联系人或联系方式，以在必要时帮助他们。
Besides warming up the muscle groups involved in the throwing action, we want to incorporate sound throwing mechanics, correct catching technique, and appropriate ball-glove exchange.
除了通过传球活跃身体的某些肌肉群，还结合传球力学，纠正接球技术，并进行交换练习。
These are insurance products that vary in structure and let individuals or groups exchange a lump sum or steady premiums for a lifetime income stream.
年金是一种结构多种多样的保险产品，购买年金的个人或机构只要一次性出一大笔钱或稳定缴纳保费，就可终生获得养老金。
A: Great! Now please exchange your presents in groups.
非常好，下面请同学们在组内交换礼物。
The exchange got into trouble with the SEC in 1999, when it was charged with failing to stop illegal trading schemes perpetrated by groups of floor brokers.
交易所在1999年陷入SEC的麻烦中，那是它被控无法制止底层经纪人的非法交易。
In addition, patients with the same condition also can create groups to exchange the disease, doctors can also be sent to them at any time-related research and medical progress.
另外，病情相同的患者还可以建立小组，互相交流病情，医生也可以随时给他们发送有关的研究和相关医学进展。
Treated with ventilation and examined effects of the two groups on gas exchange, the duration time of ventilation and days in hospital, also the fact of VAP.
动态观察两组病例的通气及氧合指标、总机械通气时间、住院天数及呼吸机相关肺炎的发生情况。
Methods: 56 infants treated by exchange transfusion in 1991 ~ 2004 were divided into 2 groups according to gestational age to compare the curative effect and incidence of adverse events.
方法：将1991 ~ 2004年进行换血的56例新生儿按照胎龄分组，分析其疗效和副作用有无差异。
The ion exchange resins containing DEAE -, CM -, -so3h groups were prepared and their USES in biochemistry were studied.
合成了含DEAE,CM及磺酸基的离子交换材料，并初步研究了这些树脂的基本物化性能及其在生化分离中的应用。
The use of mandarin can contribute to information transmission and cultural exchange between ethnic groups and people in different places.
普通话有利于不同种族、地区人民之间的信息传递和文化交流。
I would like to attend this event. I believe that it will allow me to benefit much in the areas of culture and subject matters. I hope also that it will enhance quality exchange among people groups.
我想要参加这次的活动，我相信这会使我在文化上和议题上学习到很多(获益良多)，也希望能够促成族群良好的交流。
I would like to attend this event. I believe that it will allow me to benefit much in the areas of culture and subject matters. I hope also that it will enhance quality exchange among people groups.
我想要参加这次的活动，我相信这会使我在文化上和议题上学习到很多(获益良多)，也希望能够促成族群良好的交流。
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