descent stage

基本解释

But at an altitude of 1.6km a specially designed descent stage bearing the rover will drop away from this vehicle. The descent stage has eight rocket motors on its corners.
在距离火星地表1.6km高度时，在特别设计承载探测车的降落台将会脱离这个探测车，并且降落台边角上拥有八个火箭发动机。
Neil Armstrong, left, displays a plaque that will later be attached to a landing leg of the lunar module descent stage and will be left on the moon by the Apollo 11 astronauts.
Neil Armstrong，左，展示一张牌匾，此牌匾随后将附在登月舱下降阶段的着陆支架上，并且将被阿波罗11号的宇航员留在月球上。
Images of the Apollo 11 landing site taken by LRO clearly show where the descent stage (about 12 feet in diameter) was left behind, as well as the astronauts' tracks and equipment deployed.
LRO拍摄的阿波罗十一号登陆点照片很清晰的显示出其留下的登陆台（直径约4米），同时还能看到宇航员的脚印和放置的设备。

Israel's descent to Egypt sets the stage for the rise of a pharaoh who, the text says, didn't know Joseph and all that he had done for Egypt.
以色列人下埃及也为一个法老的得势打下基础，文中说法老不认识约瑟夫，也不知他为埃及做的一切。
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After an explosion in Apollo 13's service module cut off propulsion and power, the lunar excursion module (LEM) was used as a lifeboat to provide life support to the three astronauts, and the engine of its descent stage for course changes, until the command module could re-enter the atmosphere after a long coast around the moon.
MSN: Salvaging Science from Stricken Mars Moon Probe: A Scientist's View - Technology & science - Space - Space.com NBC News