21. The ligaments within the joint become thickened and menisci can become damaged and wear away . 22. Rocks were solid but water could wear away rock. 23. Because our bickering will wear away at my father. 24. Constant dripping wears away a stone, the saying goes. 25. They can chip or wear away , and stains easily seep into pores, seams and voids. 26. Rodent incisors grow and wear away continually through gnawing, which helps maintain relatively constant length. 27. The river wears away the soft rock first, sculpting pools and small falls and chutes. 28. Also, when soil particles are blowing they wear away at the plants that they run into. 29. After moult birds appear less colourful, until the tips of the newly grown feathers wear away . 30. As the cartilage wears away completely, you could be walking around with bone rubbing against bone.
