earth orbit

基本解釋

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”將于周四開始一段為期三天的太空之旅，其中一項(xiàng)任務(wù)是該國首次太空行走。
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（the Ares I）火箭，同時(shí)確定戰(zhàn)神5號火箭是美國宇航局未來的中流砥柱。

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.

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 Site