a real or imaginary straight line going through the centre of an 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。

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。

the second of the small bones in the neck that form the spine and support the skull

an agreement between governments or politicians to work together to achieve a particular aim

the Franco-German axis 法德轴心

the countries, including Germany, Italy, and Japan, that fought against the Allies in the Second World War

the Axis powers/nations 轴心国