"新婚快乐"用英语可以表达为"happy wedding"或者"congratulations on your wedding"。
"新婚"这个词来自拉丁文"novus matrimonium"，
意思是"新的婚姻"。"快乐"这个词来自拉丁文"gaudium"，
意思是"喜悦"。
下面是一些使用"happy wedding"或"congratulations on your wedding"的例句：
"Happy wedding to the newlyweds! May your marriage be filled with love and joy." (祝新人新婚快乐！愿你们的婚姻充满爱与喜悦。)
"Congratulations on your wedding! Wishing you both a pfetime of happiness." (祝贺你们的婚礼！祝你们终生幸福。)
"Sending all my love and best wishes to the happy couple on their special day. Happy wedding!" (在你们特殊的日子里，我向这对幸福的夫妻致以所有的爱与祝愿。新婚快乐！)
