变暗淡

例句：

1. 1. The population ofthe city has been diminishing for decades.
   这个城市的人口几十年来一直在减少。
2. 2. Thesun dimmed as it set on thehorizon.
   太阳在地平线上落下时变得暗淡了。
3. 3. The company's profits havebeen diminishing due to competition.
   由于竞争，这家公司的利润一直在减少。