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Sino-American relationship is complicated and many-folded, with the disintegration of the former Soviet Union, the conflicting situation of the 2 military blocs headed by U. S. A and U. S. S. R is non-existent, which enables U. S. A to keep an upper trend in every field, and U. S. A is always trying to keep her leading position.

中美关系是多重复杂的关系，一方面，在冷战之后，随着苏联的解体，以美苏为首的两大军事集团对峙的局面消失，使得美国成为世界上惟一的超级大国，其综合国力无人能比肩，而且美国在各个领域中一直保持着强劲的上升势头，美国也一直努力保持自己的领导地位。

Muriel said running a bit to keep away from the switch her master was using to keep the animals moving.

&这是突发之行&Muriel说稍为远离她的师父是开关利用动物保持移动。

Muriel said running a bit to keep away from the switch her master was using to keep the animals moving.

&这是突发之行&muriel说稍为远离她的师父是用开关保持动物感人。

As for a friend who is unfamiliar to you,Chinese should keep a distance of less than one maters, while Americans are supposed to keep a distance of 1.2-3.5maters.

在中国，当一个陌生人接触我们时，对我们来说是很正常的，但是对于美国人。

Wesley soon learned that the only way to keep Methodists alive was to keep them moving.

韦斯利尽快据悉，唯一的出路，以保持卫活着是为了让他们感动。

Wesley soon learned that the only way to keep Methodists alive was to keep them moving.

韦斯利很快了解到，唯一的办法保持循道活著是为了让他们感动。

Radio frequency identification, or RFID, tags are already changing the way companies keep track of inventory, how owners keep track of pets and how turnpikes collect tolls.

无线电频率识别，或RFID标签已经改变了公司追踪存货，如何跟踪业主的宠物，以及如何turnpikes收集费。

Finally, to keep the wing wires from dangling in the cockpit, I found these neat little "Wire Tamers" from Knox Hobbies to keep that scale-looking interior, uh...

最后，让翼电线从悬挂在驾驶舱内，我发现这些整齐一点&丝驯兽师&从诺克斯爱好保持如此规模的前瞻性内部，嗯。。。

An one-storied house can keep flower seed grass and feed a chicken to keep a dog.

平房可以养花种草，喂鸡养狗。

We need to operate there in order to keep these snipers and terrorists away from the fence in order to keep civilians safe.

我们需要在那里行动，以便把狙击手和恐怖分子从边界上清除出去，确保平民的安全。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。