When I arrange to drive to the airport I usually spare more time for unexpected incidents as traffic jam or wheels leaked etc. in case.

我在安排开车前往机场时，总会考虑留一点时间，以防路上遇到交通堵塞或者轮胎漏气等意外情况。

youdao

Shubho : Yes. In real world, Car is the higher level module/entity, and it depends on the lower level modules/entities like the Engines or Wheels.

Shubho ：是的，在现实中，汽车是高级模块或实体，它依赖于低级模块或实体，如引擎或车轮。

youdao

In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.

在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。

youdao

if you've got a hill or valley and there's a cart on wheels it's going to go down to the bottom.

如果我们有一座山或者山谷，并且,有一个有轮子的车，这辆车会自动滑到底部。

麻省理工公开课 - 热力学与动力学课程节选

The rollers move passively as the wheels turn, or the wheels can lock in place with only the rollers rotating.

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Everything, it seems, that could be carried or rolled on two or four wheels has been looted -- from the beautiful silk carpet that once graced the foyer to the slot machines that lined the casino walls.

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