变速箱

In a sentence

• 我的汽车的变速箱需要维修。

  My car's gearbox needs repair.

  This sentence employs "变速箱" to refer to a specific component of the car that is responsible for gear shifting.

• 现代的变速箱技术提高了汽车的动力表现。

  Modern gearbox technology has enhanced car performance.

  Here, "变速箱" is generalized to indicate advanced engineering technologies associated with vehicle gear systems.

• 驾驶手动变速箱的汽车需要技巧。

  Driving cars with manual gearboxes requires skill.

  In this case, "变速箱" specifies the type of gearbox, i.e., a manual gearbox, within the context of driving expertise.