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由于类似空气阻力的牵引作用，这些气体的（运行）速度减缓。
The gas was slowed by a drag force similar to air resistance.
youdao
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当一颗行星绕它的轨道运行时，它能来回牵引恒星。
As a planet orbits, it pulls a star back and forth.
youdao
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当一颗行星绕它的轨道运行时，它能来回牵引恒星。
As a planet orbits, it pulls a star back and forth.
youdao