rustiness是什么意思

n.生锈,声音沙哑

1. The old bicycle has a lot of rustiness on its frame.
这辆旧自行车的车架上有很多铁锈。

2. After not playing the piano for many years, she felt a sense of rustiness when she tried to play again.
多年不弹钢琴后，她再次尝试弹奏时感到有些生疏。

生锈；生锈度；不熟练；生疏