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- 轮子是绕轴旋转的。
A wheel revolves round/on its axis.
- 圆的轴线是其直径。
The axis of a circle is its diameter.
- 轴的部位不正。
The axle is out of true.
- 後车轴断了。
The back axle is broken.
- 地球是绕轴旋转的吗？
Does the earth rotate on an axis?
- 公共汽车的后轴断了。
The back axle of the bus was broken.
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