Today's Rocket Words: Your 5 words and meanings to learn

降落伞

一种用布做成的装置,挂在某人或某物上,以便从飞机上安全跳下。

滑翔

使用经过改良的降落伞从斜坡或悬崖上滑下去的娱乐运动。

跳伞

一种运动,从飞机上跳下,完成各种身体动作后,再拉动降落伞的开伞绳落地。

重力

试图把两个物体拉向对方的力。

阻力

与运动方向相反的作用力。

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