天文学家怀疑成对的行星也参与了这种弹弓活动，使它们处于不规则的椭圆轨道上。
Astronomers suspect that pairs of planets also engage in this slingshot activity, leaving them in disturbed, elliptical orbits.
不可避免的火山活动和地球轨道变化会重创较为单一的生态系统，使其疲惫不堪，因此地球便开始有些乱了套。
As the thinner ecosystems were strained and overwhelmed by the inevitable perturbations of volcanic activity or changes in Earth's orbit, the planet went a bit haywire.
尽管中国的探月工程成果辉煌(2011年中国将要发射第二个月球探测器)，但人们更感兴趣的是其低地球轨道与探测火星的活动。
Although much has been made of Chinese lunar ambitions (a second Chinese probe will be launched in 2011), it is its activities in low Earth orbit and around Mars that will be more interesting.
美国宇航局说，宇航员最早将于2016开始太空飞行。美国航空航天局自20世纪70年代的“阿波罗计划”以来，就没有进行过超出地球低轨道的载人航空活动。
NASA says astronauts would not fly onboard until at least 2016. NASA has not flown astronauts beyond low-Earth orbit since the Apollo program, in the 1970s.
美国航空航天局自20世纪70年代的“阿波罗计划”以来，就没有进行过超出地球低轨道的载人航空活动。
NASA has not flown astronauts beyond low-Earth orbit since the Apollo program, in the 1970s.
为了探索太阳和其它恒星的工作原理，在早期观测活动后，科学家使用火箭开始在地球轨道上对太阳进行研究。
To learn more about how the sun and other stars work, after early observations using rockets, scientists began studying the sun from Earth orbit.
月球轨道侦察器已经传回了有关我们这个最近天体邻居的大量漂亮照片和科学数据，并且美国宇航局的人已经举办了一些宣传活动。
The Lunar Reconnaissance Orbiter has been sending back loads of pretty pictures and gobs of new science about our nearest astronomical neighbor, and the folks at NASA hosted several outreach events.
欧洲航天局的“火星快车号”（Mars Express）飞船也将于2011年在接近火卫一的轨道上飞过，上述航天活动都是围绕着这颗以前默默无闻的卫星而展开，反映了人类对它的兴趣，也必然会引起人们猜测人类登陆这颗星球的可能。
With Mars Express, the European Space Agency’s craft, also passing close to Phobos in 2011, all this interest in a previously obscure moon will lead to speculation about human missions there.
他的学习和研究，以及他的各种各样的校外活动逐渐把他带到了一个与其从小成长的道路完全不同的社会轨道，大大丰富了他的生活阅历。
His studies, combined with his extramural activities, gradually brought him into quite a different social orbit from the one he grew up in, which led to quite an enrichment of his life experience.
这种分析的概念的基础是将所观察到的神经元活动抽象成用非稳定周期轨道的分级所描述的动力学图。
The conceptual foundation of this analysis is the abstraction of observed neuronal activities into a dynamical landscape characterized by a hierarchy of "unstable periodic orbits" (UPOs).
其次是太阳活动因素。轨道倾角对舱内剂量的影响并不显著。
The solar flare activity is another factor and the effect of orbit inclination seems no importance.
在这次任务中，列奥·诺夫成为离开轨道宇宙飞船的区域而进行运载工具外活动(eva)的第一人。
During this mission, Leonov becomes the first person to leave the confines of an orbiting spacecraft and perform an EXTRAVEHICULAR ACTIVITY (EVA).
第二条本办法适用于城市轨道交通的运营及相关的管理活动。
Article 2 the present Measures shall be applicable to the operating of urban rail transit and the relevant management activities.
目前他们的公共卫生条件相当落后，平均每1400人拥有一个公共厕所，另外他们缺少公共活动空间，孩子们只能在附近的公墓或者铁路轨道上玩耍。
Current standards of sanitation are low, with just one toilet per 1,400 people, and the lack of open space means that the only places for children to play are in cemeteries and on the railway tracks.
月球行星轨道效应和太阳活动均与旱涝有明显的对应关系。
世界各国具备城市规划、建筑或轨道交通等相关设计经验的公司、事务所或联合体等均可参加本次方案征集活动。
Worldwide excellent design companies, firms or joint ventures fully experienced in municipal planning, architecture and rail transit are qualified for submitting the design schemes.
世界各国具备城市规划、建筑或轨道交通等相关设计经验的公司、事务所或联合体等均可参加本次方案征集活动。
Worldwide excellent design companies, firms or joint ventures fully experienced in municipal planning, architecture and rail transit are qualified for submitting the design schemes.
应用推荐