The moment his fingers leave the leather loop of the handle, he will fall off the planet.

他的手指一旦松开皮包拎手，就会坠落星球万劫不复。

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You may be going through difficult times right now and feel like dropping off the planet.

也许你现在正处于艰难的时期，感觉像坠入谷底。

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The station is "off the planet and it's the first step outward -- not an end in itself but a step along the way.

国际空间站“是人类向太空进军的第一步，它不是终点，而是前进过程中的重要一步。”

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The Esa satellite's radiometer works by measuring the natural emission of microwaves coming up off the planet's surface.

BBC: Smos 'space chopper' returns first global maps

Gates wants to wipe the remaining polio cases off the planet in the same way that smallpox was eliminated.

FORBES: Bill Gates and Diane Sawyer Push Vaccines, Polio Eradication At FDR's Home

For it really is true that the major cost and difficulty of doing so is getting the first 50 miles off the planet.

FORBES: Is This The Final Technical Piece We Need For The Space Elevator?