gratz是祝贺的缩写。
congratulations的缩写是GRATZ。意思是：恭喜，祝贺。congratulations的缩写是英语的概念，而英语的最早形式是由盎格鲁-撒克逊人移民于5世纪带到英国的一组西日耳曼语支（Ingvaeonic）方言，被统称为古英语。
恭喜，你生了个健康的男孩。
The club also offers its congratulations to D. Brown on his appointment as president.
俱乐部也对D.布朗被任命为主席表示祝贺。
Congratulations on your interesting article.
祝贺你写出这么有意思的文章。
双语例句：
1、他十分大度地祝贺他的继任者做出了决定。
He was generous enough to congratulate his successor on his decision.
2、她只能祝贺他。
She could not but congratulate him.
3、“祝贺你！”他拍着我的背说。
'Congratulations!' he said, slapping me on the back.
4、她向他虚情假意地微微一笑表示祝贺。
She flashed him a false smile of congratulation.
5、我为他们取得的成就向他们所有人表示祝贺。
I congratulated them all on their results.
6、好样的！祝贺！
Way to go! High five!
7、向创作出这样一部具有权威性又清晰易懂的作品的作者们祝贺。
The authors are to be congratulated on producing such a clear and authoritative work.
8、他们达成了协议，相互握手祝贺。
They shook hands on the deal.
9、请代我向她致以最热烈的祝贺。
Please send her my warmest congratulations.
10、谨向所有有关人员表示热烈的祝贺。
Hearty congratulations to everyone involved.