axle

名词 axle:

1. a shaft on which a wheel rotates

1. The garage mechanic find a crack in the back axle of the car.
   汽车修理厂的机修工发现汽车的後车轴上有一条裂缝。
2. The part of a machine shaft or axle supported by a bearing.
   轴颈机械的转动轴或轮轴中由轴承所支撑的部分
3. The back axle of the bus was broken.
   公共汽车的后轴断了。

ax.le

n.（名词）
A supporting shaft or member on or with which a wheel or a set of wheels revolves.
车轴，轮轴：一个轮子或一组轮子在其上或围绕其转动的支撑杆或部件

The spindle of an axletree.
车轴轴心
Either end of an axletree.
轴端：车轴的任一端

来源：
Middle English axel
中古英语 axel
from Old Norse ôxull
源自 古斯堪的纳维亚语 ôxull