sincere造句

I got this phone call from a gentleman, who seemed sincere enough.
这个电话是一位绅士打来的,他似乎非常诚恳。

All the well-meant, sincere advice is largely wasted on him.
他对所有善意、真挚的建议基本都无动于衷。

There was a sincere expression of friendliness on both their faces.
他们俩的脸上都流露出真挚友好的表情。