保持

Aircraft is a combined research product of every high technology. It needs a very powerful engine to drive it to fly at high speed, a highly reliable fuselage to stand the action of variable stress, an advanced navigation control system to control the flying direction and posture of the flight, and a comfortable cabin environment.

航空飞行器是各高新技术研究成果的集成，要提供很强动力并保持快速飞行速度的发动机、能承受反复交变应力的可靠性很强的飞行壳体、可控制飞行方向和位姿的先进导航系统和操纵系统、舒适的人机环境空间等。

May 25, 2006, the border public security work conference held for the first time psychological active in the border check points at all levels of psychological counseling service, to maintain their psychological health.

因此，如何调节边防检查人员的心理压力，已成为公安边防队伍建设中的一个极需解决的问题。2006年5月25日，公安边防部队召开的首次心理工作会议要求各级边防检查站积极开展心理疏导工作，保持官兵心理健康。

China may take a more active military role in its region, but the overall balance of power in

中国可能会在本地区发挥更大的军事作用，但是整个东亚地区的力量平衡将会保持不变。

This region remains highly active, which wears out neurons and alters their connections to each other.

这一区域一直保持高度活跃的状态，使神经细胞受到劳损，而且改变了神经细胞之间的连接线路。

Keep active state for one's body and eyes.

让自己的身体和眼睛保持在活跃的状态。

The session cookie gives more security to web content and remain active till the browser window is open.

会话cookie来提供更多的安全，保持网页内容到浏览器窗口活动是开放的。

Early art education is one of the training means with uniqueness of activeness and imagination.

二、早期美术教育是保持活泼、富于创造性想象力的训练方式之一。

It's not easy to maintain your intellectual acuity when your emotions are leading you astray.

当你的情绪引你入歧途的时候，要保持理智是不容易的。

How to maintain the Ad Hoc network connectivity is one of the basic problem.

如何保持Ad Hoc网络的连通性是其中的研究难题之一。

Their intention is to keep the chaos factor spiraling ever higher while they concoct scheme upon scheme to stall things ad infinitum.

他们的意图就是保持不断上升的混乱局面，同时不断提高他们编造的东西，无限期的拖延计划。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。