A spaceship that reaches escape velocity is moving fast enough to break free of a planet's gravity.

太空船之所以能飞出地球，是因为其飞行速度很快，足以挣脱地球的引力。

youdao

A spaceship that reaches escape velocity is moving fast enough to break free of a planet's gravity.

太空船之所以能飞出地球，是因为其飞行速度很快，足以挣脱地球的引力。

youdao