unoiled
adj. 未涂油的;未上油的
v. 除油;脱脂(unoil 的过去分词)
例句
An unoiled instrument reacts on the breath moisture - the wood expands, becomes rough and the sound deteriorates.
没有上油的乐器会对吹笛时呼出的潮气起反应——木头扩张,变得粗糙,音质变坏。