I have to go now bye.

我得走了，再见。

youdao

Joanna: I have to go now. Bye.

乔安娜：我现在得走了，再见。

youdao

I start now. Bye!

我现在就去，再见。

youdao

Bye. Let's go. Let's get it started right now.

那就再见，我们现在就开始吧。

麻省理工公开课 - 固态化学导论课程节选

Bye-bye now.

拜拜了。

哈佛公开课 - 计算机科学课程节选

When the young members of Generation-i use their phones to send text messages, the small keyboards make typing awkward and abbreviations even more important: "b4n" (bye for now), "cu" (see you).

WSJ: David Gelernter: The Pros and Cons of Cyber-English