可以，happy day意思是：祝你有快樂的一天！一般用來道別用。例句：Oh,happy day!I made it!啊，真是愉快的一天！我成功了！happy意思是adj.幸福的；快樂的。day的意思是n.一天；白天；時期。

1、happy good day幸福的好日子 ; 幸福美好的一天

2、Happy one day開心一天 ; 快樂一天

3、Happy summer day開心暑假的一天

4、How happy one day多么開心的一天

5、Happy sunny day幸福最晴天

It's also a happy day, isn't it?

這也是一個高興的日子，是不是？

Give my husband an old motorbike to tinker with and he's as happy as the day is long.

給我丈夫一輛老式摩托車鼓搗，他會很高興的。

Well, l certainly call her to say "Happy Mother's Day" and promise that I will visit home soon.

好吧,我固然會打電話給她說"母親節(jié)快樂",并保證我會很快回家。

來源：高三網(wǎng)