The unctuous sales representative kept flattering our manager, which made the whole team suspicious.

那位諂媚的業務代表一直奉承我們經理，讓整個團隊都起了疑心。

Customers complained that the hotel concierge sounded unctuous and insincere on the phone.

顧客抱怨飯店禮賓人員在電話中聽起來油腔滑調又不真誠。

His unctuous email praising the CEO's vision did not help his chances for promotion.

他那封吹捧執行長遠見的諂媚電子郵件，對他的升遷機會毫無幫助。