I congratulate you with all my heart.

我衷贺你。

Our grateful thanks are due to you.

我们衷感谢你。

We gratefully acknowledge the contributions of everyone who helped us.

我们衷感谢每一位帮助我们人所努力。

Sincere felicitation on ywe completing the postgraduate cwese or receiving the doctorate of science.

衷贺你修完博士生程并获得理学博士学位。

I sincerely hope that you will be successful.

我衷你成功。

I subscribe wholeheartedly to this theory.

我衷拥护这种理论。

She gave him her heartfelt thanks.

她向他表示衷感谢。

We would like to take this opportunity to convey our heartfelt condolences to the families of the victims.

我们谨此向受害人家属表达我们衷慰唁。

I’m deeply grateful to you.

我衷感谢你。

Thank you kindly.

衷感谢你。