denatured
adj[esp attrib 尤作定語]
(a) made unfit for eating and drinking (but possibly still usable for other purposes) 不適於食用或飲用的; 變性的
denatured alcohol 變性酒精.
(b) having lost its natural qualities 已失去天然特性的
denatured rubber, ie no longer elastic 失去彈性的橡膠.