quickest

However, in some instances it is the quickest way to achieve a goal.

但是，在有些情况下这是达到目标最快的一种方式。

They have to learn not only the streets, landmarks and hotels, but also the quickest way to get there.

他们必须学习不仅是街道，建筑物及酒店，而且最快的方式到达那里。