生疏的, 不熟練的
not as good as it used to be, because you have not been practicing
範例:• My French is a bit rusty, but I can still understand most of it.我的法語有點生疏了，但我大部分還是能聽懂。• After years of not playing, his piano skills were a bit rusty.多年不彈後，他的鋼琴技巧有點生疏了。同義詞:out of practiceunskilledimpaired