生日快乐：happy birthday。
英 [ˈhæpi ˈbə:θdei] 美 [ˈhæpi ˈbɚθˌde]
其中happy是快乐的意思，birthday是生日。
birthday party生日聚会
birthday cake生日蛋糕
birthday card生日贺卡
扩展资料：
生日祝福语
1、wish my joyous, beautiful, enthusiastic, healthy, self-confident and energetic friend a happy birthday!祝我的快乐的、漂亮的、热情奔放的、健康的、自信的、充满活力的朋友生日快乐！
2、Hope your birthday's happy no matter what you do, because, there couldn't ever be a day too nice for you.祝愿您生日快乐，事事顺心祥和，因为没有一天比今天更值得庆贺。
3、I thawed a frozen cake over my fire, placed a candle on the top, lit it and sang “happy birthday to me “ at the top of my voice.我在火炉上把一块冰冻的蛋糕融解，在上面插了根蜡烛，点燃后，扯起嗓子唱起了“祝我生日快乐”。
4、Happy Birthday to you! Have a happy day, eat lots of cake and ice-cream, open many presents and cards. love ya!祝您生日快乐！痛快地玩一天，多吃些点心和冰淇淋，打开那些礼物和贺卡。宝贝！
5、Happy birthday to an attractive, intellectual, sophisticated and all-round splendid person.祝福一位美丽迷人,聪明大方,有教养又倍受赞叹的妙人儿,生日快乐!
6、Wishing you a birthday that's among your very best, and when you're wished a happy day, that goes for all the rest.祝愿你过一个曾经度过的最好的生日，在我祝你生日快乐时，也愿你天天欢喜!
7、Happy birthday, Jerry. This is a present for you.生日快乐，杰瑞，这是送你的礼物。
"生日快乐"在英语中可以翻译为 "Happy birthday"。
