n.僵硬；硬度
As the stiffness and soreness subside, slowly build up your runs. 隨著僵硬和酸疼的消退，逐漸加大你的跑量。
These increase the stiffness of the overall suspension system and this is balanced with a softer damping-rebounding ratio. 這些改變?cè)黾恿藨业跸到y(tǒng)整體的硬度，和較軟的避振器平衡。
