用英文怎麼表達？生日快樂

雙語例句：

祝您生日快樂！

Happy birthday to you!

他在蛋糕上鑲上了“生日快樂”的字樣。

He piped "happy birthday" on the cake.

全班學生一起對着老師唱起了《生日快樂》歌。

The whole class all joined together to sing happy birthday to the teacher.

全年生日快樂！

Happy Birthday All Year!

你知道"祝你生日快樂"這首歌是第一首在外太空被唱響的歌嗎？

Do you know that the "Happy Birthday to You" song is the first song sung in outer space?