1. 指南針用于確定地理方向的設(shè)備，通常包括一個或多個水平安裝或懸掛的磁針，可在樞軸上自由活動直到與地球磁場在一條線上
   A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth.
2. 活動防浪板帆船上一活動龍骨，可以繞樞軸扯起以減少船在淺水的吃水深度
   A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water.
3. 中心銷連接馬車或其它車輛的車身和它的前軸的垂直栓銷，一般起樞軸作用
   A vertical bolt that joins the body of a wagon or other vehicle to its front axle and usually acts as a pivot.

軸的英語翻譯：