八点过4秒时他们看到一大块物体从航天飞机轨道器上脱离并坠落。
Four seconds after eight they saw a large piece leave the orbiter and fall away.
这架航天飞机最高能在965公里的高度作轨道运行。
The space shuttle can orbit at altitudes of up to 965 kilometers.
航天飞机已经在其轨道上生产着某种特别合金。
The space shuttle has been producing special alloys in orbit.
这次飞行的目的是为了测试新的航天飞机系统能否安全的进入轨道和安全的返回地球着陆。
The aim of this flight was to test the new shuttle system, to go safely up into orbit and to return to the Earth for a safe landing.
轨道太空飞机应该较太空梭来得安全。
The orbital space plane promises to be much safer than the shuttle.
轨道器是航天飞机的一个组成部分，外形像飞机。
The orbiter is the part of the shuttle that looks like an airplane.
用航天飞机将科学装备送往轨道空间站。
1981年首次将航天飞机送进轨道的飞行。
The first flight of a space shuttle into orbit took place in 1981.
1981年首次将航天飞机送进轨道的飞行。
The first flight of a space shuttle into orbit took place in 1981.
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