Some advertisements have no pull at all.
有些广告毫无吸引力。
When people go out into space, they are away from the earth's gravitational field. There is no pull. They are in a condition of weightlessness.
当人们进入太空，他们就离开了地球的引力场，那就没有引力了，他们就处于失重状态。
When people go out into space, they are away from the earth's gravitational field. There is no pull. They are in a condition of weightlessness.
当人们进入太空，他们就离开了地球的引力场，那就没有引力了，他们就处于失重状态。
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