ingratiating

The salesman approached us with an ingratiating smile that made me feel slightly suspicious.

(Chinese) 推销员带着谄媚的微笑向我们走来，这让我感到有些怀疑。

He spoke in an ingratiating tone, hoping the judge would be more lenient with his sentence.

(Chinese) 他用一种讨好的语气说话，希望法官能对他从轻发落。