磨损，磨薄：指由于长时间或频繁使用而逐渐磨损或减少。
变得不再有效，失去影响力：指某事物逐渐变得不再有效或失去影响力。
wear thin 打折扣;逐渐消失 Wear在这里的意思是某一样东西在一段时间里，它的功能和价值在逐步降低，也就是中文里说的损耗。
wear thin 打折扣;逐渐消失 Wear在这里的意思是某一样东西在一段时间里，它的功能和价值在逐步降低，也就是中文里说的损耗。
... weary疲倦的 wear thin变薄 tire out使筋疲力尽 ...
... 变弱,逐渐消失 die down 穿薄, 逐渐消失 wear thin 渐渐消失 die away; die down; fade; melt; merge ...
Without anybody to depend on, he had to wear thin clothes in winter and walk to school without shoes in summer.
没有人可以依靠，他冬天只能穿单薄的衣服，夏天只能赤脚走路上学。
I can wear thin clothes.
我可以穿很薄的衣服。
But their patience may wear thin if the intense competition drags on.
但如果激烈的竞争持续下去，这种耐心会消磨殆尽。
Otherwise,he said, patience in the United States and in other NATO countries for the mission could wear thin.
VOA : standard.2009.06.11
There's also the question of whether the musical TV show concept is beginning to wear thin.
More generally, the novelty of serving on government task-forces may begin to wear thin.
In short, the magic of Harry, on its fourth outing, is starting to wear thin.