i hope that this is the beginning of a wonderful life together.
我希望这是你们美好生活的开始。

i wish you much happiness together.
愿你俩婚姻幸福美满。

best wishes for many years of happiness for the two of you.
愿你俩百年好合。

best wishes for a joyful home together.
愿你俩组成一个快乐的二人世界。

may everyday in your life together be as full of happiness and joy as your wedding day.
愿你俩的每一天都能像新婚时一样，洋溢着快乐和喜悦。

the two of you make a perfect couple.
你们俩真是天造地设的一对。

for a special couple: congratulations on your wedding.
献给一对与众不同的新人：祝新婚快乐。

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know you both well and feel that your marriage will last for a long time.
我很了解你们，觉得你们的婚姻定可天长地久。LocaLHoSt

i am filled with such joy at the sight of you two beginning together.
看见你俩开始生活在一起，我内心充满了欢愉。

wedding bells are breaking up that gang of mine.
结婚的钟声响起，拆散了我昔日的那一群伙伴。

you couldn't have picked a better girl.
你再也找不到这么好的女孩