axis
noun [ C ] uk/ˈæk.sɪs/ us/ˈæk.sɪs/ axes uk/ˈæk.siːz/ us
(IMAGINARY LINE)
轴（线）;中心线
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
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。
参考轴线，基准线，坐标线
a fixed line on a graph used to show the position of a point
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。
(BONE)
anatomy, medical specialized枢椎，第二颈椎
the second of the small bones in the neck that form the spine and support the skull
See also: atlas (BONE IN NECK)
(POLITICAL AGREEMENT)
轴心（指政府或从政者之间的联盟）
an agreement between governments or politicians to work together to achieve a particular aim
the Franco-German axis 法德轴心