为了成为地球上有责任心的一员，我们必须推进对大气和海洋更深入的研究。
To serve as responsible stewards of the planet, we must press forward on deeper atmospheric and oceanic research.
坠入海洋的二级推进器模型和猎户座模型将则不会再收回。
The dummy second stage and Orion mockups will crash into the ocean and not be recovered, mission managers have said.
而有些卫星则装配了火箭发动机和推进剂贮箱，这样可以控制它们的坠落路线，将其引导坠落到海洋之中，而不是坠落到居民区里。
Some satellites come equipped with a rocket engine and propellant tank so controllers can aim their descent into an ocean instead of a neighborhood, but not all.
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