It is orbiting a star called gliese 876 , 15 light years from earth , with an orbit time of just 1 . 94 earth days 这颗行星围绕着一颗名为“格里斯876 ”的恒星运转，该恒星距地球15光年，绕轨道运行一周的时间约为地球上的1 . 94天。
First artificial satellite launched fr earth . sputnik i is orbited by the soviet union , arking the dawn of earth ' s space age 第一颗人造卫星，苏联制的史普尼克一号从地球上发射开始轨道运行，为地球的太空世纪开启了曙光。
The speed units section of the dialog allows you to select the units in which satellite speed information , such as the satellite ' s orbital speed , is displayed 速度单位用于选择人造卫星运行速度的单位，比如上面显示的轨道运行速度。
Before driving the car out of the garage , be sure to look for the grid or the start - lights in order to orientate yourself with which way the track runs 然后驾驶汽车离开车库，一定要看看，为网格或启动灯，以自己的定位与方向的轨道运行。
Sensors in your car tuned to radio signals from orbiting satellites can locate your car precisely at any moment and warn of traffic jams 你汽车上与绕轨道运行的卫星发出的无线电信号调谐的传感器能随时精确地确定你汽车的方位，并告知交通阻塞情况。
The american space agency nasa first used the word shuttle in nineteen - sixty - eight to describe a craft that would orbit the earth and return astronauts home 美国太空总署nasa在1968年第一次把这种能绕地球的轨道运行并能把宇航员送回的航空器用“太空梭”一词来描述。
After a decade of preparation , china will launch its first human being into space on october 15 in a 90 - minute flight that will orbit the earth once 经过十年的准备，我国将在本月15日首次发射载人航天飞机，预计载人航天飞机将会在历经90分钟的飞行后抵达地球轨道运行。
Under the laws of quantum mechanics , the nuclei of atoms have shell - like structures analogous to the spheres in which given numbers of electrons exist in certain orbits around the nucleus 根据量子力学的法则，核子外部一定数目的核外电子以一定的圆周轨道运行形成球状壳结构。
The satellites happened to orbit over the region between two and nine hours after the earthquake , making the first radar measurements of a tsunami propagating across the open ocean 在地震发生后2 ~ 9小时间，这组卫星正绕著轨道运行到此区域的上方，并做出海啸横越开放海域的第一套雷达观测。
The leonid shower occurs each november , when the earth ' s orbit takes it through the trail of particles shed by the comet tempel - tuttle as it swings around the sun once every 33 years 当地球穿过"坦佩尔-塔特尔"彗星尾部稠密的彗星碎片带时，就会出现流星雨现象。这颗彗星在太阳系外围轨道运行，它的运行周期是33年。
