A light object, like a tennis ball, on the edge of the trampoline will follow a curved path toward the bowling ball - like a planet orbiting the sun.
而蹦床边缘的轻物体，比如网球，将沿着曲面移向保龄球-就像行星围绕着太阳运行。
A light object, like a tennis ball, on the edge of the trampoline will follow a curved path toward the bowling ball - like a planet orbiting the sun.
而蹦床边缘的轻物体，比如网球，将沿着曲面移向保龄球-就像行星围绕着太阳运行。
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