I am writing to offer my sincere congratulations to you on your winning the first prize in the Chinese Chess Network Challenge.

我写这封信是为了衷心地祝贺你赢得了中国象棋网络挑战赛一等奖。

youdao

Let me first of all express sincere thanks to Prime Minister Brown for his kind invitation and thoughtful arrangements.

首先，我对布朗首相的盛情邀请和周到安排表示衷心的感谢！

youdao

If you must decline at the last minute, please notify the host prior to the event or first thing the next day with sincere regrets.

如果你最后还是要拒绝邀请，记得在活动前通知主办人，并且事后第二天马上至上诚挚的歉意。

youdao

Sincere thanks to all of the participants in the first-ever Safety Data Jam!

WHITEHOUSE: Safety Data Jam connects Tech Innovators with Public Safety Officers | The White House

"For the first time, we had a very sincere and brotherly approach to the issue, which is of satisfaction to us and I hope we can succeed together, " Karzai said.

CNN: Afghan girls maimed by acid vow to go to school

The first three of those five praising sentences were sincere.

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