The earth rotates once a day on its axis. 地球繞它的自轉軸一天旋轉一周。
The orientation of the equatorial belt suggests the parent star maintained the same spin axis both before and after it exploded. 環赤道帶的方向說白，前身星在爆發前後的自轉軸取向保持不變。
In this axial turbine, steam always flows along the axis of rotated axis, thus, all blades extend with the radiation shape along the axis outward. 在這種軸流式渦輪機中，蒸汽總是沿主軸的旋轉軸流動的，因此，葉片由主軸向外呈輻射狀展開。
First, we examined the problem from a geometrical point of iew then we modeled the different rotational axes by studying the change in olume of the spinal canal. 在研究過程中，我們先在幾何學方面通過研究椎管容量來模擬不同的旋轉軸。
