adj.油的;油膏的;似油的;松软肥沃的;
例句:
He made an unctuous assurance.
他做了个虚请假意的承诺.
He speaks in unctuous tones.
他说话油腔滑调.
Unctuous but vivacious in the mouth.
口感醇浓而又不乏轻快.