常見(jiàn)例句雙語(yǔ)例句NASA is retiring the shuttles in order to focus on developing the next generation of spacecraft that could go beyond low-Earth-orbit.航空航天局正安排使所有航天飛機(jī)退役后，專注于發(fā)展第二代可飛越低地球軌道的飛機(jī)。If all goes well, three “taikonauts” will embark Thursday on a three-day Earth-orbit mission, which includes the country’s first spacewalk.如果一切順利，三名“太空人”將于周四開(kāi)始一段為期三天的太空之旅，其中一項(xiàng)任務(wù)是該國(guó)首次太空行走。All but two of the plans call for commercial space companies to replace the Ares I rocket for low-Earth-orbit missions, and identify the Ares V as the corner stone of the NASA's future.這兩個(gè)計(jì)劃幾乎都要求商業(yè)航天公司更換執(zhí)行地球低軌道飛行任務(wù)的戰(zhàn)神1號(hào)（the Ares I）火箭，同時(shí)確定戰(zhàn)神5號(hào)火箭是美國(guó)宇航局未來(lái)的中流砥柱。原聲例句In nineteen fifty-seven, a Soviet military rocket carried a small satellite into Earth orbit.The number of man-made objects in Earth orbit has been growing each year.It completes an orbit of the Earth in only ninety-seven minutes.權(quán)威例句Others, including Pirate Party co-chairman Gregory Engels, seem to prefer the idea of a low-Earth-orbit satellite that would be harder to launch but easier to keep airborne than a slowly-deflating balloon.FORBES: Pirates In The Sky: Filesharers Want To Build Weather-Balloon-Hosted Download SiteFor example, instead of the lunar rendezvous method that NASA chose for the Apollo program, the player can opt for Earth-orbit rendezvous or even direct-ascent where a single giant spacecraft lifts off from Earth and lands on the Moon.FORBES: The Return of "Buzz Aldrin's Race into Space" GameAfter a million years or so the influence of these large planets, it was thought, caused the fragments to be ejected from the asteroid belt altogether—potentially ending up in an Earth-crossing orbit.ECONOMIST: Celestial mechanics: A rock in a hard place The 返回 earth orbit