Though an ion engine could never lift a spacecraft out of Earth's gravity well.

尽管离子发动机不能使航天飞机很好地摆脱地球引力。

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Face in space follows a long tradition of spacecraft carrying personal touches out of Earth's gravity well.

“脸谱上太空”活动延续了NASA使用航天器携带私人物品脱离地心引力的优良传统。

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The Gravity Well -a central element - provide a refrain both to the structural efforts and to the luminous sculpture.

重力井是整个结构的核心元素，它为这个透明的雕塑造型的成功构建提供了强有力的支撑。

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Now, gravity, well force, is equal to mass times acceleration, g and the acceleration due to gravity is g.

是重力，等于质量乘以加速度，由重力导致的加速度是。

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Here on the Earth's surface we live at the bottom of a gravity well.

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And our technologies of how to get out of that gravity well are really rather primitive.

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April Fools' Day would become a perennial black hole in my calendar, a gravity well into which my attention would be sucked from increasingly great distances in time.

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