axis
柯林斯词典
1. N a reference axis of a three-dimensional Cartesian coordinate system along which the z-coordinate is measured z轴
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axis
剑桥词典
axis noun [C] (IMAGINARY LINE)
a real or imaginary straight line going through the centre of a object that is spinning , or a line that divides a symmetrical shape into two equal halves
轴（线）；中心线
The earth revolves around the axis that joins the North and South Poles. 地球围绕贯穿南北两极的地轴自转。
The diameter of a circle is also an axis. 一个圆的直径也是一条轴线。
a fixed line on a graph used to show the position of a point
参考轴线，基准线，坐标线
Plot distance on the vertical y-axis against time on the horizontal x-axis . 用纵坐标Y轴表示距离，用横坐标X轴表示时间。
axis noun [C] (BONE)
anatomy, medical specializedthe second of the small bones in the neck that form the spine and support the skull
枢椎，第二颈椎
也见 atlas (BONE IN NECK)
axis noun [C] (POLITICAL AGREEMENT)
an agreement between governments or politicians to work together to achieve a particular aim
轴心（指政府或从政者之间的联盟）
the Franco-German axis 法德轴心 返回 axis