cylinder shaped circle gear 柱状齿环
circle shaped surface resistance 环形表面电阻
You are probably aware that the earth's orbit around the sun is not shaped like a perfect circle.
你可能知道,地球围绕太阳的轨道形状不像一个完美的圆。
This island is almost shaped like a circle.
这个岛的形状几乎像一个圆形。
Earth's orbit is not a perfect circle, but is rather an oval-shaped ellipse, like that of the orbits of all the other planets.
地球轨道不是完美的圆形,而是像其它行星的轨道一样,呈椭圆形。
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